1113113231 has 4 divisors (see below), whose sum is σ = 1113223200. Its totient is φ = 1113003264.

The previous prime is 1113113219. The next prime is 1113113263. The reversal of 1113113231 is 1323113111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1113113231 - 2³⁰ = 39371407 is a prime.

It is a super-2 number, since 2×1113113231² = 2478042130054518722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113113731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38066 + ... + 60623.

It is an arithmetic number, because the mean of its divisors is an integer number (278305800).

Almost surely, 2^1113113231 is an apocalyptic number.

1113113231 is a deficient number, since it is larger than the sum of its proper divisors (109969).

1113113231 is an equidigital number, since it uses as much as digits as its factorization.

1113113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109968.

The product of its digits is 54, while the sum is 17.

The square root of 1113113231 is about 33363.3516152080. The cubic root of 1113113231 is about 1036.3659005661.

Adding to 1113113231 its reverse (1323113111), we get a palindrome (2436226342).

The spelling of 1113113231 in words is "one billion, one hundred thirteen million, one hundred thirteen thousand, two hundred thirty-one".