31116461113 has 4 divisors (see below), whose sum is σ = 31117241380. Its totient is φ = 31115680848.

The previous prime is 31116461087. The next prime is 31116461143.

31116461113 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6028435449 + 25088025664 = 77643^2 + 158392^2 .

It is a cyclic number.

It is not a de Polignac number, because 31116461113 - 2²¹ = 31114363961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31116461143) 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, 326898 + ... + 411211.

It is an arithmetic number, because the mean of its divisors is an integer number (7779310345).

Almost surely, 2^31116461113 is an apocalyptic number.

It is an amenable number.

31116461113 is a deficient number, since it is larger than the sum of its proper divisors (780267).

31116461113 is an equidigital number, since it uses as much as digits as its factorization.

31116461113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780266.

The product of its digits is 1296, while the sum is 28.

The spelling of 31116461113 in words is "thirty-one billion, one hundred sixteen million, four hundred sixty-one thousand, one hundred thirteen".