31818044112 has 20 divisors (see below), whose sum is σ = 82196614080. Its totient is φ = 10606014688.

The previous prime is 31818044099. The next prime is 31818044113. The reversal of 31818044112 is 21144081813.

It is a super-2 number, since 2×31818044112² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31818044113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331437912 + ... + 331438007.

It is an arithmetic number, because the mean of its divisors is an integer number (4109830704).

Almost surely, 2^31818044112 is an apocalyptic number.

It is an amenable number.

31818044112 is an abundant number, since it is smaller than the sum of its proper divisors (50378569968).

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

31818044112 is a wasteful number, since it uses less digits than its factorization.

31818044112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662875930 (or 662875924 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 31818044112 in words is "thirty-one billion, eight hundred eighteen million, forty-four thousand, one hundred twelve".