31650382428 has 36 divisors (see below), whose sum is σ = 85908182472. Its totient is φ = 9042966240.

The previous prime is 31650382411. The next prime is 31650382481. The reversal of 31650382428 is 82428305613.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 31650382428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26913003 + ... + 26914178.

It is an arithmetic number, because the mean of its divisors is an integer number (2386338402).

Almost surely, 2^31650382428 is an apocalyptic number.

It is an amenable number.

31650382428 is an abundant number, since it is smaller than the sum of its proper divisors (54257800044).

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

31650382428 is a wasteful number, since it uses less digits than its factorization.

31650382428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53827202 (or 53827193 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 31650382428 in words is "thirty-one billion, six hundred fifty million, three hundred eighty-two thousand, four hundred twenty-eight".