31445664530 has 16 divisors (see below), whose sum is σ = 64688224320. Its totient is φ = 10781370672.

The previous prime is 31445664457. The next prime is 31445664553. The reversal of 31445664530 is 3546654413.

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, 224611820 + ... + 224611959.

It is an arithmetic number, because the mean of its divisors is an integer number (4043014020).

Almost surely, 2^31445664530 is an apocalyptic number.

31445664530 is an abundant number, since it is smaller than the sum of its proper divisors (33242559790).

31445664530 is a wasteful number, since it uses less digits than its factorization.

31445664530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449223793.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 31445664530 in words is "thirty-one billion, four hundred forty-five million, six hundred sixty-four thousand, five hundred thirty".