31110113 has 4 divisors (see below), whose sum is σ = 31833648. Its totient is φ = 30386580.

The previous prime is 31110091. The next prime is 31110133. The reversal of 31110113 is 31101113.

It is a happy number.

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 31110113 - 2¹² = 31106017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31110094 and 31110103.

It is not an unprimeable number, because it can be changed into a prime (31110133) 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, 361703 + ... + 361788.

It is an arithmetic number, because the mean of its divisors is an integer number (7958412).

Almost surely, 2^31110113 is an apocalyptic number.

It is an amenable number.

31110113 is a deficient number, since it is larger than the sum of its proper divisors (723535).

31110113 is an equidigital number, since it uses as much as digits as its factorization.

31110113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723534.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 31110113 is about 5577.6440366879. The cubic root of 31110113 is about 314.5095685689.

Adding to 31110113 its reverse (31101113), we get a palindrome (62211226).

The spelling of 31110113 in words is "thirty-one million, one hundred ten thousand, one hundred thirteen".