31544243112 has 16 divisors (see below), whose sum is σ = 78860607840. Its totient is φ = 10514747696.

The previous prime is 31544243089. The next prime is 31544243141. The reversal of 31544243112 is 21134244513.

It is a self number, because there is not a number n which added to its sum of digits gives 31544243112.

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 3 ways as a sum of consecutive naturals, for example, 657171708 + ... + 657171755.

It is an arithmetic number, because the mean of its divisors is an integer number (4928787990).

Almost surely, 2^31544243112 is an apocalyptic number.

It is an amenable number.

31544243112 is an abundant number, since it is smaller than the sum of its proper divisors (47316364728).

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

31544243112 is a wasteful number, since it uses less digits than its factorization.

31544243112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314343472 (or 1314343468 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

Adding to 31544243112 its reverse (21134244513), we get a palindrome (52678487625).

The spelling of 31544243112 in words is "thirty-one billion, five hundred forty-four million, two hundred forty-three thousand, one hundred twelve".