31244651316 has 42 divisors (see below), whose sum is σ = 81979715202. Its totient is φ = 10414882800.

The previous prime is 31244651311. The next prime is 31244651353. The reversal of 31244651316 is 61315644213.

31244651316 is a `hidden beast` number, since 3 + 124 + 4 + 6 + 513 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19696999716 + 11547651600 = 140346^2 + 107460^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31244651311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5354535 + ... + 5360366.

It is an arithmetic number, because the mean of its divisors is an integer number (1951897981).

Almost surely, 2^31244651316 is an apocalyptic number.

31244651316 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31244651316 is an abundant number, since it is smaller than the sum of its proper divisors (50735063886).

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

31244651316 is a wasteful number, since it uses less digits than its factorization.

31244651316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10714923 (or 10714906 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 31244651316 in words is "thirty-one billion, two hundred forty-four million, six hundred fifty-one thousand, three hundred sixteen".