31020011031131 has 8 divisors (see below), whose sum is σ = 32856587766720. Its totient is φ = 29184753207168.

The previous prime is 31020011031019. The next prime is 31020011031133. The reversal of 31020011031131 is 13113011002013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31020011031131 - 2²² = 31020006836827 is a prime.

It is a super-2 number, since 2×31020011031131² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020011031133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329679476 + ... + 329773553.

It is an arithmetic number, because the mean of its divisors is an integer number (4107073470840).

Almost surely, 2^{31020011031131} is an apocalyptic number.

31020011031131 is a deficient number, since it is larger than the sum of its proper divisors (1836576735589).

31020011031131 is a wasteful number, since it uses less digits than its factorization.

31020011031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659455813.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 31020011031131 its reverse (13113011002013), we get a palindrome (44133022033144).

The spelling of 31020011031131 in words is "thirty-one trillion, twenty billion, eleven million, thirty-one thousand, one hundred thirty-one".