31251416144 has 40 divisors (see below), whose sum is σ = 68639252640. Its totient is φ = 13664585088.

The previous prime is 31251416111. The next prime is 31251416159. The reversal of 31251416144 is 44161415213.

It is a super-2 number, since 2×31251416144² (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 31251416144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3949922 + ... + 3957825.

It is an arithmetic number, because the mean of its divisors is an integer number (1715981316).

Almost surely, 2^31251416144 is an apocalyptic number.

It is an amenable number.

31251416144 is an abundant number, since it is smaller than the sum of its proper divisors (37387836496).

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

31251416144 is a wasteful number, since it uses less digits than its factorization.

31251416144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907787 (or 7907781 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The spelling of 31251416144 in words is "thirty-one billion, two hundred fifty-one million, four hundred sixteen thousand, one hundred forty-four".