31010112013 has 4 divisors (see below), whose sum is σ = 31133658528. Its totient is φ = 30886565500.

The previous prime is 31010111989. The next prime is 31010112019. The reversal of 31010112013 is 31021101013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31010112013 - 2²⁵ = 30976557581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31010111984 and 31010112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010112019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61772881 + ... + 61773382.

It is an arithmetic number, because the mean of its divisors is an integer number (7783414632).

Almost surely, 2^31010112013 is an apocalyptic number.

It is an amenable number.

31010112013 is a deficient number, since it is larger than the sum of its proper divisors (123546515).

31010112013 is a wasteful number, since it uses less digits than its factorization.

31010112013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123546514.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31010112013 its reverse (31021101013), we get a palindrome (62031213026).

The spelling of 31010112013 in words is "thirty-one billion, ten million, one hundred twelve thousand, thirteen".