31424389028 has 24 divisors (see below), whose sum is σ = 57927240000. Its totient is φ = 14874897888.

The previous prime is 31424388907. The next prime is 31424389043. The reversal of 31424389028 is 82098342413.

It is a self number, because there is not a number n which added to its sum of digits gives 31424389028.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32903 + ... + 252846.

It is an arithmetic number, because the mean of its divisors is an integer number (2413635000).

Almost surely, 2^31424389028 is an apocalyptic number.

31424389028 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31424389028 is a deficient number, since it is larger than the sum of its proper divisors (26502850972).

31424389028 is a wasteful number, since it uses less digits than its factorization.

31424389028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287219 (or 287217 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 31424389028 in words is "thirty-one billion, four hundred twenty-four million, three hundred eighty-nine thousand, twenty-eight".