231310312011233 has 64 divisors (see below), whose sum is σ = 299073610063872. Its totient is φ = 174061694465280.

The previous prime is 231310312011197. The next prime is 231310312011239. The reversal of 231310312011233 is 332110213013132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231310312011233 is a prime.

It is a super-2 number, since 2×231310312011233² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231310312011239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16313510 + ... + 26995392.

It is an arithmetic number, because the mean of its divisors is an integer number (4673025157248).

Almost surely, 2^{231310312011233} is an apocalyptic number.

It is an amenable number.

231310312011233 is a deficient number, since it is larger than the sum of its proper divisors (67763298052639).

231310312011233 is a wasteful number, since it uses less digits than its factorization.

231310312011233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682094.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 231310312011233 its reverse (332110213013132), we get a palindrome (563420525024365).

The spelling of 231310312011233 in words is "two hundred thirty-one trillion, three hundred ten billion, three hundred twelve million, eleven thousand, two hundred thirty-three".