31312000032331 has 16 divisors (see below), whose sum is σ = 33631739015040. Its totient is φ = 29046649282560.

The previous prime is 31312000032311. The next prime is 31312000032343. The reversal of 31312000032331 is 13323000021313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31312000032331 is a prime.

It is a super-2 number, since 2×31312000032331² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31312000032311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19428700 + ... + 20978521.

It is an arithmetic number, because the mean of its divisors is an integer number (2101983688440).

Almost surely, 2^{31312000032331} is an apocalyptic number.

31312000032331 is a deficient number, since it is larger than the sum of its proper divisors (2319738982709).

31312000032331 is a wasteful number, since it uses less digits than its factorization.

31312000032331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40407894.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31312000032331 its reverse (13323000021313), we get a palindrome (44635000053644).

The spelling of 31312000032331 in words is "thirty-one trillion, three hundred twelve billion, thirty-two thousand, three hundred thirty-one".