31113023113 has 4 divisors (see below), whose sum is σ = 31222963408. Its totient is φ = 31003082820.

The previous prime is 31113023101. The next prime is 31113023141. The reversal of 31113023113 is 31132031113.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31132031113 = 5557 ⋅5602309.

It is a cyclic number.

It is not a de Polignac number, because 31113023113 - 2⁹ = 31113022601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113023153) 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, 54969723 + ... + 54970288.

It is an arithmetic number, because the mean of its divisors is an integer number (7805740852).

Almost surely, 2^31113023113 is an apocalyptic number.

It is an amenable number.

31113023113 is a deficient number, since it is larger than the sum of its proper divisors (109940295).

31113023113 is a wasteful number, since it uses less digits than its factorization.

31113023113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109940294.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31113023113 its reverse (31132031113), we get a palindrome (62245054226).

The spelling of 31113023113 in words is "thirty-one billion, one hundred thirteen million, twenty-three thousand, one hundred thirteen".