31312113202233 has 12 divisors (see below), whose sum is σ = 46903741587248. Its totient is φ = 20874742134660.

The previous prime is 31312113202219. The next prime is 31312113202261. The reversal of 31312113202233 is 33220231121313.

31312113202233 is a `hidden beast` number, since 3 + 1 + 312 + 1 + 1 + 320 + 2 + 23 + 3 = 666.

It is not a de Polignac number, because 31312113202233 - 2²⁰ = 31312112153657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31312113202197 and 31312113202206.

It is not an unprimeable number, because it can be changed into a prime (31312113202033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64428216223 + ... + 64428216708.

Almost surely, 2^{31312113202233} is an apocalyptic number.

It is an amenable number.

31312113202233 is a deficient number, since it is larger than the sum of its proper divisors (15591628385015).

31312113202233 is an equidigital number, since it uses as much as digits as its factorization.

31312113202233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128856432946 (or 128856432934 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31312113202233 its reverse (33220231121313), we get a palindrome (64532344323546).

The spelling of 31312113202233 in words is "thirty-one trillion, three hundred twelve billion, one hundred thirteen million, two hundred two thousand, two hundred thirty-three".