31420801478 has 32 divisors (see below), whose sum is σ = 51823473408. Its totient is φ = 14169204000.

The previous prime is 31420801453. The next prime is 31420801481. The reversal of 31420801478 is 87410802413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2741576 + ... + 2753012.

It is an arithmetic number, because the mean of its divisors is an integer number (1619483544).

Almost surely, 2^31420801478 is an apocalyptic number.

31420801478 is a deficient number, since it is larger than the sum of its proper divisors (20402671930).

31420801478 is a wasteful number, since it uses less digits than its factorization.

31420801478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12428.

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 31420801478 in words is "thirty-one billion, four hundred twenty million, eight hundred one thousand, four hundred seventy-eight".