31426478016 has 56 divisors (see below), whose sum is σ = 83231181264. Its totient is φ = 10465167360.

The previous prime is 31426478003. The next prime is 31426478071. The reversal of 31426478016 is 61087462413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115876 + ... + 276188.

It is an arithmetic number, because the mean of its divisors is an integer number (1486271094).

Almost surely, 2^31426478016 is an apocalyptic number.

It is an amenable number.

31426478016 is an abundant number, since it is smaller than the sum of its proper divisors (51804703248).

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

31426478016 is a wasteful number, since it uses less digits than its factorization.

31426478016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161349 (or 161339 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 31426478016 in words is "thirty-one billion, four hundred twenty-six million, four hundred seventy-eight thousand, sixteen".