31904428747330 has 16 divisors (see below), whose sum is σ = 57936183886584. Its totient is φ = 12648835467520.

The previous prime is 31904428747327. The next prime is 31904428747349. The reversal of 31904428747330 is 3374782440913.

It can be written as a sum of positive squares in 4 ways, for example, as 22152092973201 + 9752335774129 = 4706601^2 + 3122873^2 .

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, 14117002741 + ... + 14117005000.

Almost surely, 2^{31904428747330} is an apocalyptic number.

31904428747330 is a deficient number, since it is larger than the sum of its proper divisors (26031755139254).

31904428747330 is a wasteful number, since it uses less digits than its factorization.

31904428747330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28234007861.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 31904428747330 in words is "thirty-one trillion, nine hundred four billion, four hundred twenty-eight million, seven hundred forty-seven thousand, three hundred thirty".