31023012131 has 8 divisors (see below), whose sum is σ = 32101399200. Its totient is φ = 29945200320.

The previous prime is 31023012121. The next prime is 31023012217. The reversal of 31023012131 is 13121032013.

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 31023012131 - 2¹⁴ = 31022995747 is a prime.

It is a super-2 number, since 2×31023012131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31023012101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32615 + ... + 251216.

It is an arithmetic number, because the mean of its divisors is an integer number (4012674900).

Almost surely, 2^31023012131 is an apocalyptic number.

31023012131 is a deficient number, since it is larger than the sum of its proper divisors (1078387069).

31023012131 is a wasteful number, since it uses less digits than its factorization.

31023012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287629.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31023012131 its reverse (13121032013), we get a palindrome (44144044144).

The spelling of 31023012131 in words is "thirty-one billion, twenty-three million, twelve thousand, one hundred thirty-one".