31447472778504 has 96 divisors (see below), whose sum is σ = 90182302236000. Its totient is φ = 9865649604096.

The previous prime is 31447472778481. The next prime is 31447472778509. The reversal of 31447472778504 is 40587727474413.

31447472778504 is a `hidden beast` number, since 3 + 1 + 4 + 47 + 472 + 7 + 78 + 50 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (31447472778509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58409367 + ... + 58945305.

It is an arithmetic number, because the mean of its divisors is an integer number (939398981625).

Almost surely, 2^{31447472778504} is an apocalyptic number.

31447472778504 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31447472778504 is an abundant number, since it is smaller than the sum of its proper divisors (58734829457496).

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

31447472778504 is a wasteful number, since it uses less digits than its factorization.

31447472778504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583907 (or 583900 counting only the distinct ones).

The product of its (nonzero) digits is 147517440, while the sum is 63.

The spelling of 31447472778504 in words is "thirty-one trillion, four hundred forty-seven billion, four hundred seventy-two million, seven hundred seventy-eight thousand, five hundred four".