31300113033 has 18 divisors (see below), whose sum is σ = 52592707674. Its totient is φ = 17885778624.

The previous prime is 31300113029. The next prime is 31300113043. The reversal of 31300113033 is 33031100313.

It can be written as a sum of positive squares in only one way, i.e., 30030117264 + 1269995769 = 173292^2 + 35637^2 .

It is not a de Polignac number, because 31300113033 - 2² = 31300113029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31300112997 and 31300113015.

It is not an unprimeable number, because it can be changed into a prime (31300113043) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35487216 + ... + 35488097.

It is an arithmetic number, because the mean of its divisors is an integer number (2921817093).

Almost surely, 2^31300113033 is an apocalyptic number.

It is an amenable number.

31300113033 is a deficient number, since it is larger than the sum of its proper divisors (21292594641).

31300113033 is a wasteful number, since it uses less digits than its factorization.

31300113033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70975333 (or 70975323 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 18.

Adding to 31300113033 its reverse (33031100313), we get a palindrome (64331213346).

The spelling of 31300113033 in words is "thirty-one billion, three hundred million, one hundred thirteen thousand, thirty-three".