31464731478 has 64 divisors (see below), whose sum is σ = 65505024000. Its totient is φ = 10065050880.

The previous prime is 31464731471. The next prime is 31464731527. The reversal of 31464731478 is 87413746413.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31464731471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11656573 + ... + 11659271.

It is an arithmetic number, because the mean of its divisors is an integer number (1023516000).

Almost surely, 2^31464731478 is an apocalyptic number.

31464731478 is an abundant number, since it is smaller than the sum of its proper divisors (34040292522).

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

31464731478 is a wasteful number, since it uses less digits than its factorization.

31464731478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237.

The product of its digits is 1354752, while the sum is 48.

The spelling of 31464731478 in words is "thirty-one billion, four hundred sixty-four million, seven hundred thirty-one thousand, four hundred seventy-eight".