31010133131 has 2 divisors, whose sum is σ = 31010133132. Its totient is φ = 31010133130.

The previous prime is 31010133127. The next prime is 31010133163. The reversal of 31010133131 is 13133101013.

It is a weak prime.

It is an emirp because it is prime and its reverse (13133101013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31010133131 - 2² = 31010133127 is a prime.

It is a super-2 number, since 2×31010133131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31010133031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15505066565 + 15505066566.

It is an arithmetic number, because the mean of its divisors is an integer number (15505066566).

Almost surely, 2^31010133131 is an apocalyptic number.

31010133131 is a deficient number, since it is larger than the sum of its proper divisors (1).

31010133131 is an equidigital number, since it uses as much as digits as its factorization.

31010133131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 31010133131 its reverse (13133101013), we get a palindrome (44143234144).

The spelling of 31010133131 in words is "thirty-one billion, ten million, one hundred thirty-three thousand, one hundred thirty-one".