31313140016312 has 32 divisors (see below), whose sum is σ = 73199548091520. Its totient is φ = 12199924681440.

The previous prime is 31313140016287. The next prime is 31313140016341. The reversal of 31313140016312 is 21361004131313.

It is a happy number.

It is a congruent number.

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, 25416509138 + ... + 25416510369.

It is an arithmetic number, because the mean of its divisors is an integer number (2287485877860).

Almost surely, 2^{31313140016312} is an apocalyptic number.

It is an amenable number.

31313140016312 is an abundant number, since it is smaller than the sum of its proper divisors (41886408075208).

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

31313140016312 is a wasteful number, since it uses less digits than its factorization.

31313140016312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50833019531 (or 50833019527 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 31313140016312 its reverse (21361004131313), we get a palindrome (52674144147625).

The spelling of 31313140016312 in words is "thirty-one trillion, three hundred thirteen billion, one hundred forty million, sixteen thousand, three hundred twelve".