31613018748 has 48 divisors (see below), whose sum is σ = 81021937920. Its totient is φ = 9549010944.

The previous prime is 31613018747. The next prime is 31613018753. The reversal of 31613018748 is 84781031613.

It is a super-2 number, since 2×31613018748² (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 (31613018747) 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 15 ways as a sum of consecutive naturals, for example, 3008965 + ... + 3019452.

It is an arithmetic number, because the mean of its divisors is an integer number (1687957040).

Almost surely, 2^31613018748 is an apocalyptic number.

31613018748 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31613018748 is an abundant number, since it is smaller than the sum of its proper divisors (49408919172).

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

31613018748 is a wasteful number, since it uses less digits than its factorization.

31613018748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028466 (or 6028464 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 31613018748 in words is "thirty-one billion, six hundred thirteen million, eighteen thousand, seven hundred forty-eight".