31313012103012 has 24 divisors (see below), whose sum is σ = 73188164591136. Its totient is φ = 10419889317568.

The previous prime is 31313012102993. The next prime is 31313012103031. The reversal of 31313012103012 is 21030121031313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31313012102993) and next prime (31313012103031).

It is a self number, because there is not a number n which added to its sum of digits gives 31313012103012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222665593 + ... + 2222679680.

It is an arithmetic number, because the mean of its divisors is an integer number (3049506857964).

Almost surely, 2^{31313012103012} is an apocalyptic number.

It is an amenable number.

31313012103012 is an abundant number, since it is smaller than the sum of its proper divisors (41875152488124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31313012103012 is a wasteful number, since it uses less digits than its factorization.

31313012103012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445345867 (or 4445345865 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31313012103012 its reverse (21030121031313), we get a palindrome (52343133134325).

The spelling of 31313012103012 in words is "thirty-one trillion, three hundred thirteen billion, twelve million, one hundred three thousand, twelve".