31614448218 has 32 divisors (see below), whose sum is σ = 64804185600. Its totient is φ = 10276395696.

The previous prime is 31614448207. The next prime is 31614448277. The reversal of 31614448218 is 81284441613.

It is a super-2 number, since 2×31614448218² (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 31614448218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60723 + ... + 258681.

It is an arithmetic number, because the mean of its divisors is an integer number (2025130800).

Almost surely, 2^31614448218 is an apocalyptic number.

31614448218 is an abundant number, since it is smaller than the sum of its proper divisors (33189737382).

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

31614448218 is a wasteful number, since it uses less digits than its factorization.

31614448218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198626.

The product of its digits is 147456, while the sum is 42.

The spelling of 31614448218 in words is "thirty-one billion, six hundred fourteen million, four hundred forty-eight thousand, two hundred eighteen".