1113315231 has 16 divisors (see below), whose sum is σ = 1731104000. Its totient is φ = 636179544.

The previous prime is 1113315221. The next prime is 1113315233. The reversal of 1113315231 is 1325133111.

It is not a de Polignac number, because 1113315231 - 2⁵ = 1113315199 is a prime.

It is a super-2 number, since 2×1113315231² = 2478941607153166722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113315198 and 1113315207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113315233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539941 + ... + 541998.

It is an arithmetic number, because the mean of its divisors is an integer number (108194000).

Almost surely, 2^1113315231 is an apocalyptic number.

1113315231 is a deficient number, since it is larger than the sum of its proper divisors (617788769).

1113315231 is an equidigital number, since it uses as much as digits as its factorization.

1113315231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081963 (or 1081949 counting only the distinct ones).

The product of its digits is 270, while the sum is 21.

The square root of 1113315231 is about 33366.3787516716. The cubic root of 1113315231 is about 1036.4285875848.

Adding to 1113315231 its reverse (1325133111), we get a palindrome (2438448342).

The spelling of 1113315231 in words is "one billion, one hundred thirteen million, three hundred fifteen thousand, two hundred thirty-one".