31009044738 has 16 divisors (see below), whose sum is σ = 70877816640. Its totient is φ = 8859727056.

The previous prime is 31009044727. The next prime is 31009044743. The reversal of 31009044738 is 83744090013.

It is a junction number, because it is equal to n+sod(n) for n = 31009044696 and 31009044705.

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, 369155253 + ... + 369155336.

It is an arithmetic number, because the mean of its divisors is an integer number (4429863540).

Almost surely, 2^31009044738 is an apocalyptic number.

31009044738 is an abundant number, since it is smaller than the sum of its proper divisors (39868771902).

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

31009044738 is a wasteful number, since it uses less digits than its factorization.

31009044738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738310601.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 31009044738 in words is "thirty-one billion, nine million, forty-four thousand, seven hundred thirty-eight".