31614685648 has 80 divisors (see below), whose sum is σ = 75603661056. Its totient is φ = 12471275520.

The previous prime is 31614685607. The next prime is 31614685651. The reversal of 31614685648 is 84658641613.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 31614685595 and 31614685604.

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, 483213 + ... + 544723.

Almost surely, 2^31614685648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31614685648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37801830528).

31614685648 is an abundant number, since it is smaller than the sum of its proper divisors (43988975408).

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

31614685648 is a wasteful number, since it uses less digits than its factorization.

31614685648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61892 (or 61886 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 52.

The spelling of 31614685648 in words is "thirty-one billion, six hundred fourteen million, six hundred eighty-five thousand, six hundred forty-eight".