31339747744 has 24 divisors (see below), whose sum is σ = 64382744160. Its totient is φ = 14988574656.

The previous prime is 31339747739. The next prime is 31339747763. The reversal of 31339747744 is 44774793313.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 31339747691 and 31339747700.

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, 21289854 + ... + 21291325.

It is an arithmetic number, because the mean of its divisors is an integer number (2682614340).

Almost surely, 2^31339747744 is an apocalyptic number.

It is an amenable number.

31339747744 is an abundant number, since it is smaller than the sum of its proper divisors (33042996416).

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

31339747744 is a wasteful number, since it uses less digits than its factorization.

31339747744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42581212 (or 42581204 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 52.

The spelling of 31339747744 in words is "thirty-one billion, three hundred thirty-nine million, seven hundred forty-seven thousand, seven hundred forty-four".