31023123120331 has 16 divisors (see below), whose sum is σ = 31815960357888. Its totient is φ = 30241950760000.

The previous prime is 31023123120259. The next prime is 31023123120347. The reversal of 31023123120331 is 13302132132013.

It is a cyclic number.

It is not a de Polignac number, because 31023123120331 - 2¹¹ = 31023123118283 is a prime.

It is a super-2 number, since 2×31023123120331² (a number of 28 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 = 31023123120296 and 31023123120305.

It is not an unprimeable number, because it can be changed into a prime (31023123160331) 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, 3911875 + ... + 8794828.

It is an arithmetic number, because the mean of its divisors is an integer number (1988497522368).

Almost surely, 2^{31023123120331} is an apocalyptic number.

31023123120331 is a deficient number, since it is larger than the sum of its proper divisors (792837237557).

31023123120331 is a wasteful number, since it uses less digits than its factorization.

31023123120331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12707162.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31023123120331 its reverse (13302132132013), we get a palindrome (44325255252344).

The spelling of 31023123120331 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-three million, one hundred twenty thousand, three hundred thirty-one".