231021330031323 has 24 divisors (see below), whose sum is σ = 359367595331472. Its totient is φ = 142166544303168.

The previous prime is 231021330031321. The next prime is 231021330031379. The reversal of 231021330031323 is 323130033120132.

231021330031323 is a `hidden beast` number, since 2 + 3 + 1 + 0 + 2 + 1 + 3 + 300 + 31 + 323 = 666.

It is not a de Polignac number, because 231021330031323 - 2¹ = 231021330031321 is a prime.

It is a super-2 number, since 2×231021330031323² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231021330031321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38519565 + ... + 44111217.

It is an arithmetic number, because the mean of its divisors is an integer number (14973649805478).

Almost surely, 2^{231021330031323} is an apocalyptic number.

231021330031323 is a deficient number, since it is larger than the sum of its proper divisors (128346265300149).

231021330031323 is a wasteful number, since it uses less digits than its factorization.

231021330031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944795 (or 5944792 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 231021330031323 its reverse (323130033120132), we get a palindrome (554151363151455).

The spelling of 231021330031323 in words is "two hundred thirty-one trillion, twenty-one billion, three hundred thirty million, thirty-one thousand, three hundred twenty-three".