31013132103131 has 2 divisors, whose sum is σ = 31013132103132. Its totient is φ = 31013132103130.

The previous prime is 31013132103073. The next prime is 31013132103197. The reversal of 31013132103131 is 13130123131013.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31013132103131 is a prime.

It is a super-2 number, since 2×31013132103131² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31013132103097 and 31013132103106.

It is not a weakly prime, because it can be changed into another prime (36013132103131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506566051565 + 15506566051566.

It is an arithmetic number, because the mean of its divisors is an integer number (15506566051566).

Almost surely, 2^{31013132103131} is an apocalyptic number.

31013132103131 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013132103131 is an equidigital number, since it uses as much as digits as its factorization.

31013132103131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31013132103131 its reverse (13130123131013), we get a palindrome (44143255234144).

The spelling of 31013132103131 in words is "thirty-one trillion, thirteen billion, one hundred thirty-two million, one hundred three thousand, one hundred thirty-one".