31023000231 has 32 divisors (see below), whose sum is σ = 44404319232. Its totient is φ = 19220847360.

The previous prime is 31023000227. The next prime is 31023000269. The reversal of 31023000231 is 13200032013.

It is not a de Polignac number, because 31023000231 - 2² = 31023000227 is a prime.

It is a super-2 number, since 2×31023000231² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31023000231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023000431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335491 + ... + 417851.

It is an arithmetic number, because the mean of its divisors is an integer number (1387634976).

Almost surely, 2^31023000231 is an apocalyptic number.

31023000231 is a deficient number, since it is larger than the sum of its proper divisors (13381319001).

31023000231 is a wasteful number, since it uses less digits than its factorization.

31023000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82543.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31023000231 its reverse (13200032013), we get a palindrome (44223032244).

The spelling of 31023000231 in words is "thirty-one billion, twenty-three million, two hundred thirty-one", and thus it is an aban number.