231311110023 has 16 divisors (see below), whose sum is σ = 391637858560. Its totient is φ = 132177777048.

The previous prime is 231311109973. The next prime is 231311110027. The reversal of 231311110023 is 320011113132.

231311110023 is a `hidden beast` number, since 231 + 311 + 1 + 100 + 23 = 666.

It is not a de Polignac number, because 231311110023 - 2²⁰ = 231310061447 is a prime.

It is a super-2 number, since 2×231311110023² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231311109978 and 231311110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231311110027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611933965 + ... + 611934342.

It is an arithmetic number, because the mean of its divisors is an integer number (24477366160).

Almost surely, 2^231311110023 is an apocalyptic number.

231311110023 is a deficient number, since it is larger than the sum of its proper divisors (160326748537).

231311110023 is a wasteful number, since it uses less digits than its factorization.

231311110023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223868323 (or 1223868317 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 231311110023 its reverse (320011113132), we get a palindrome (551322223155).

The spelling of 231311110023 in words is "two hundred thirty-one billion, three hundred eleven million, one hundred ten thousand, twenty-three".