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531042115230231 = 31116092185310007
BaseRepresentation
bin111100010111110101110000…
…0101000111001101000010111
32120122021010112001221012021120
41320233223200220321220113
51024101043222444331411
65121233214015015023
7216566345444013003
oct17057534050715027
92518233461835246
10531042115230231
1114422a772898610
124b687629b0a473
1319a41097442237
14951c80b30d703
15415d95649a106
hex1e2fae0a39a17

531042115230231 has 8 divisors (see below), whose sum is σ = 772424894880384. Its totient is φ = 321843706200120.

The previous prime is 531042115230113. The next prime is 531042115230331. The reversal of 531042115230231 is 132032511240135.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531042115230231 - 241 = 528843091974679 is a prime.

It is a super-2 number, since 2×5310421152302312 (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 16092185310007 = 531042115230231 / (5 + 3 + 1 + 0 + 4 + 2 + 1 + 1 + 5 + 2 + 3 + 0 + 2 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 531042115230192 and 531042115230201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531042115230331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8046092654971 + ... + 8046092655036.

It is an arithmetic number, because the mean of its divisors is an integer number (96553111860048).

Almost surely, 2531042115230231 is an apocalyptic number.

531042115230231 is a deficient number, since it is larger than the sum of its proper divisors (241382779650153).

531042115230231 is a wasteful number, since it uses less digits than its factorization.

531042115230231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16092185310021.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 531042115230231 its reverse (132032511240135), we get a palindrome (663074626470366).

The spelling of 531042115230231 in words is "five hundred thirty-one trillion, forty-two billion, one hundred fifteen million, two hundred thirty thousand, two hundred thirty-one".

Divisors: 1 3 11 33 16092185310007 48276555930021 177014038410077 531042115230231