313031321020 has 48 divisors (see below), whose sum is σ = 730657011168. Its totient is φ = 111681839360.

The previous prime is 313031321011. The next prime is 313031321033. The reversal of 313031321020 is 20123130313.

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, 13411639 + ... + 13434958.

It is an arithmetic number, because the mean of its divisors is an integer number (15222021066).

Almost surely, 2^313031321020 is an apocalyptic number.

It is an amenable number.

313031321020 is an abundant number, since it is smaller than the sum of its proper divisors (417625690148).

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

313031321020 is a wasteful number, since it uses less digits than its factorization.

313031321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26846670 (or 26846668 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 313031321020 its reverse (20123130313), we get a palindrome (333154451333).

The spelling of 313031321020 in words is "three hundred thirteen billion, thirty-one million, three hundred twenty-one thousand, twenty".