31312233332 has 12 divisors (see below), whose sum is σ = 54835586400. Its totient is φ = 15644922936.

The previous prime is 31312233317. The next prime is 31312233391. The reversal of 31312233332 is 23333221313.

It is a happy number.

It is a super-2 number, since 2×31312233332² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2792138 + ... + 2803329.

It is an arithmetic number, because the mean of its divisors is an integer number (4569632200).

Almost surely, 2^31312233332 is an apocalyptic number.

It is an amenable number.

31312233332 is a deficient number, since it is larger than the sum of its proper divisors (23523353068).

31312233332 is a wasteful number, since it uses less digits than its factorization.

31312233332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5596870 (or 5596868 counting only the distinct ones).

The product of its digits is 5832, while the sum is 26.

Adding to 31312233332 its reverse (23333221313), we get a palindrome (54645454645).

The spelling of 31312233332 in words is "thirty-one billion, three hundred twelve million, two hundred thirty-three thousand, three hundred thirty-two".