31313020032212 has 48 divisors (see below), whose sum is σ = 58118368516992. Its totient is φ = 14710861347840.

The previous prime is 31313020032191. The next prime is 31313020032223. The reversal of 31313020032212 is 21223002031313.

It is a super-2 number, since 2×31313020032212² (a number of 28 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 15 ways as a sum of consecutive naturals, for example, 607251143 + ... + 607302705.

It is an arithmetic number, because the mean of its divisors is an integer number (1210799344104).

Almost surely, 2^{31313020032212} is an apocalyptic number.

It is an amenable number.

31313020032212 is a deficient number, since it is larger than the sum of its proper divisors (26805348484780).

31313020032212 is a wasteful number, since it uses less digits than its factorization.

31313020032212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66368 (or 66366 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31313020032212 its reverse (21223002031313), we get a palindrome (52536022063525).

The spelling of 31313020032212 in words is "thirty-one trillion, three hundred thirteen billion, twenty million, thirty-two thousand, two hundred twelve".