123331312252355 has 16 divisors (see below), whose sum is σ = 148074792259584. Its totient is φ = 98613582334560.

The previous prime is 123331312252349. The next prime is 123331312252387. The reversal of 123331312252355 is 553252213133321.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-123331312252355 is a prime.

It is a super-2 number, since 2×123331312252355² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90444422 + ... + 91797908.

It is an arithmetic number, because the mean of its divisors is an integer number (9254674516224).

Almost surely, 2^{123331312252355} is an apocalyptic number.

123331312252355 is a deficient number, since it is larger than the sum of its proper divisors (24743480007229).

123331312252355 is a wasteful number, since it uses less digits than its factorization.

123331312252355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362986.

The product of its digits is 486000, while the sum is 41.

Adding to 123331312252355 its reverse (553252213133321), we get a palindrome (676583525385676).

The spelling of 123331312252355 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, three hundred twelve million, two hundred fifty-two thousand, three hundred fifty-five".