31032313131 has 16 divisors (see below), whose sum is σ = 42086056320. Its totient is φ = 20333528640.

The previous prime is 31032313121. The next prime is 31032313133. The reversal of 31032313131 is 13131323013.

It is not a de Polignac number, because 31032313131 - 2¹⁴ = 31032296747 is a prime.

It is a super-2 number, since 2×31032313131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31032313098 and 31032313107.

It is not an unprimeable number, because it can be changed into a prime (31032313133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069096 + ... + 1097738.

It is an arithmetic number, because the mean of its divisors is an integer number (2630378520).

Almost surely, 2^31032313131 is an apocalyptic number.

31032313131 is a deficient number, since it is larger than the sum of its proper divisors (11053743189).

31032313131 is a wasteful number, since it uses less digits than its factorization.

31032313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34826.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31032313131 its reverse (13131323013), we get a palindrome (44163636144).

The spelling of 31032313131 in words is "thirty-one billion, thirty-two million, three hundred thirteen thousand, one hundred thirty-one".