31340221392 has 20 divisors (see below), whose sum is σ = 80962238720. Its totient is φ = 10446740448.

The previous prime is 31340221357. The next prime is 31340221417. The reversal of 31340221392 is 29312204313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326460592 + ... + 326460687.

It is an arithmetic number, because the mean of its divisors is an integer number (4048111936).

Almost surely, 2^31340221392 is an apocalyptic number.

It is an amenable number.

31340221392 is an abundant number, since it is smaller than the sum of its proper divisors (49622017328).

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

31340221392 is a wasteful number, since it uses less digits than its factorization.

31340221392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652921290 (or 652921284 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The spelling of 31340221392 in words is "thirty-one billion, three hundred forty million, two hundred twenty-one thousand, three hundred ninety-two".