31147055560 has 16 divisors (see below), whose sum is σ = 70080875100. Its totient is φ = 12458822208.

The previous prime is 31147055543. The next prime is 31147055587. The reversal of 31147055560 is 6555074113.

It can be written as a sum of positive squares in 2 ways, for example, as 29028662884 + 2118392676 = 170378^2 + 46026^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389338155 + ... + 389338234.

Almost surely, 2^31147055560 is an apocalyptic number.

It is an amenable number.

31147055560 is an abundant number, since it is smaller than the sum of its proper divisors (38933819540).

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

31147055560 is a wasteful number, since it uses less digits than its factorization.

31147055560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778676400 (or 778676396 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 31147055560 in words is "thirty-one billion, one hundred forty-seven million, fifty-five thousand, five hundred sixty".