31023123160331 has 2 divisors, whose sum is σ = 31023123160332. Its totient is φ = 31023123160330.

The previous prime is 31023123160261. The next prime is 31023123160343. The reversal of 31023123160331 is 13306132132013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31023123160331 - 2²² = 31023118966027 is a prime.

It is a super-2 number, since 2×31023123160331² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31023123160294 and 31023123160303.

It is not a weakly prime, because it can be changed into another prime (31023123160031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511561580165 + 15511561580166.

It is an arithmetic number, because the mean of its divisors is an integer number (15511561580166).

Almost surely, 2^{31023123160331} is an apocalyptic number.

31023123160331 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023123160331 is an equidigital number, since it uses as much as digits as its factorization.

31023123160331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 31023123160331 its reverse (13306132132013), we get a palindrome (44329255292344).

The spelling of 31023123160331 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-three million, one hundred sixty thousand, three hundred thirty-one".