31300011610021 has 32 divisors (see below), whose sum is σ = 39358590370560. Its totient is φ = 24381752028480.

The previous prime is 31300011610009. The next prime is 31300011610039. The reversal of 31300011610021 is 12001611000313.

It is not a de Polignac number, because 31300011610021 - 2⁹ = 31300011609509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300011610081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28426275 + ... + 29506831.

It is an arithmetic number, because the mean of its divisors is an integer number (1229955949080).

Almost surely, 2^{31300011610021} is an apocalyptic number.

It is an amenable number.

31300011610021 is a deficient number, since it is larger than the sum of its proper divisors (8058578760539).

31300011610021 is a wasteful number, since it uses less digits than its factorization.

31300011610021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083706 (or 1083684 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31300011610021 its reverse (12001611000313), we get a palindrome (43301622610334).

The spelling of 31300011610021 in words is "thirty-one trillion, three hundred billion, eleven million, six hundred ten thousand, twenty-one".