31424001808 has 40 divisors (see below), whose sum is σ = 64808575200. Its totient is φ = 14717793024.

The previous prime is 31424001797. The next prime is 31424001811. The reversal of 31424001808 is 80810042413.

It is a self number, because there is not a number n which added to its sum of digits gives 31424001808.

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 7 ways as a sum of consecutive naturals, for example, 553666 + ... + 607777.

It is an arithmetic number, because the mean of its divisors is an integer number (1620214380).

Almost surely, 2^31424001808 is an apocalyptic number.

31424001808 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31424001808 is an abundant number, since it is smaller than the sum of its proper divisors (33384573392).

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

31424001808 is a wasteful number, since it uses less digits than its factorization.

31424001808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161559 (or 1161553 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 31424001808 in words is "thirty-one billion, four hundred twenty-four million, one thousand, eight hundred eight".