31244157120 has 112 divisors (see below), whose sum is σ = 108218435328. Its totient is φ = 7574338560.

The previous prime is 31244157089. The next prime is 31244157143. The reversal of 31244157120 is 2175144213.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468804 + ... + 1489923.

Almost surely, 2^31244157120 is an apocalyptic number.

31244157120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31244157120 is an abundant number, since it is smaller than the sum of its proper divisors (76974278208).

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

31244157120 is a wasteful number, since it uses less digits than its factorization.

31244157120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958758 (or 2958748 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 31244157120 in words is "thirty-one billion, two hundred forty-four million, one hundred fifty-seven thousand, one hundred twenty".