31614440660 has 96 divisors (see below), whose sum is σ = 77390691840. Its totient is φ = 10720512000.

The previous prime is 31614440639. The next prime is 31614440681. The reversal of 31614440660 is 6604441613.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31614440639) and next prime (31614440681).

It is a super-2 number, since 2×31614440660² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31614440660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368885 + ... + 446435.

It is an arithmetic number, because the mean of its divisors is an integer number (806153040).

Almost surely, 2^31614440660 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 31614440660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38695345920).

31614440660 is an abundant number, since it is smaller than the sum of its proper divisors (45776251180).

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

31614440660 is a wasteful number, since it uses less digits than its factorization.

31614440660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77697 (or 77695 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

It can be divided in two parts, 31614 and 440660, that added together give a palindrome (472274).

The spelling of 31614440660 in words is "thirty-one billion, six hundred fourteen million, four hundred forty thousand, six hundred sixty".