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23123230131 = 366191116447
BaseRepresentation
bin10101100010010000…
…000111110110110011
32012200111102210112210
4111202100013312303
5334324021331011
614342255023203
71446005133051
oct254220076663
965614383483
1023123230131
119896508051
124593b0ab03
1322467773c1
1411950091d1
159050526a6
hex562407db3

23123230131 has 8 divisors (see below), whose sum is σ = 30831704064. Its totient is φ = 15415121480.

The previous prime is 23123230129. The next prime is 23123230157. The reversal of 23123230131 is 13103232132.

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

It is a cyclic number.

It is not a de Polignac number, because 23123230131 - 21 = 23123230129 is a prime.

It is a super-2 number, since 2×231232301312 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23123230098 and 23123230107.

It is not an unprimeable number, because it can be changed into a prime (23123230231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140350 + ... + 256796.

It is an arithmetic number, because the mean of its divisors is an integer number (3853963008).

Almost surely, 223123230131 is an apocalyptic number.

23123230131 is a deficient number, since it is larger than the sum of its proper divisors (7708473933).

23123230131 is a wasteful number, since it uses less digits than its factorization.

23123230131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182641.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23123230131 its reverse (13103232132), we get a palindrome (36226462263).

The spelling of 23123230131 in words is "twenty-three billion, one hundred twenty-three million, two hundred thirty thousand, one hundred thirty-one".

Divisors: 1 3 66191 116447 198573 349341 7707743377 23123230131