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144210422231 = 155809925559
BaseRepresentation
bin1000011001001110011…
…1000110100111010111
3111210020021100111020022
42012103213012213113
54330320332002411
6150125505455355
713263445235531
oct2062347064727
9453207314208
10144210422231
1156183029737
1223b4794155b
13107a2c797b5
146da08b8851
153b406adedb
hex21939c69d7

144210422231 has 4 divisors (see below), whose sum is σ = 144211503600. Its totient is φ = 144209340864.

The previous prime is 144210422227. The next prime is 144210422233. The reversal of 144210422231 is 132224012441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 132224012441 = 671973492723.

It is a cyclic number.

It is not a de Polignac number, because 144210422231 - 22 = 144210422227 is a prime.

It is a super-2 number, since 2×1442104222312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144210422231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144210422233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306971 + ... + 618588.

It is an arithmetic number, because the mean of its divisors is an integer number (36052875900).

Almost surely, 2144210422231 is an apocalyptic number.

144210422231 is a deficient number, since it is larger than the sum of its proper divisors (1081369).

144210422231 is an equidigital number, since it uses as much as digits as its factorization.

144210422231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081368.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 144210422231 its reverse (132224012441), we get a palindrome (276434434672).

The spelling of 144210422231 in words is "one hundred forty-four billion, two hundred ten million, four hundred twenty-two thousand, two hundred thirty-one".

Divisors: 1 155809 925559 144210422231