31311212210032 has 20 divisors (see below), whose sum is σ = 60666395892336. Its totient is φ = 15655368108800.

The previous prime is 31311212210023. The next prime is 31311212210039. The reversal of 31311212210032 is 23001221211313.

It is a junction number, because it is equal to n+sod(n) for n = 31311212209985 and 31311212210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311212210039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13786969 + ... + 15896632.

Almost surely, 2^{31311212210032} is an apocalyptic number.

It is an amenable number.

31311212210032 is a deficient number, since it is larger than the sum of its proper divisors (29355183682304).

31311212210032 is a wasteful number, since it uses less digits than its factorization.

31311212210032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29749536 (or 29749530 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31311212210032 its reverse (23001221211313), we get a palindrome (54312433421345).

The spelling of 31311212210032 in words is "thirty-one trillion, three hundred eleven billion, two hundred twelve million, two hundred ten thousand, thirty-two".