113231331 has 8 divisors (see below), whose sum is σ = 167750160. Its totient is φ = 75487536.

The previous prime is 113231329. The next prime is 113231333. The reversal of 113231331 is 133132311.

It is a happy number.

113231331 is a `hidden beast` number, since 11 + 323 + 1 + 331 = 666.

It is an interprime number because it is at equal distance from previous prime (113231329) and next prime (113231333).

It is not a de Polignac number, because 113231331 - 2¹ = 113231329 is a prime.

It is a super-2 number, since 2×113231331² = 25642668640063122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113231333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096850 + ... + 2096903.

It is an arithmetic number, because the mean of its divisors is an integer number (20968770).

Almost surely, 2^113231331 is an apocalyptic number.

113231331 is a deficient number, since it is larger than the sum of its proper divisors (54518829).

113231331 is an equidigital number, since it uses as much as digits as its factorization.

113231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193762 (or 4193756 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 113231331 is about 10641.0211446083. The cubic root of 113231331 is about 483.7884964256.

Adding to 113231331 its reverse (133132311), we get a palindrome (246363642).

The spelling of 113231331 in words is "one hundred thirteen million, two hundred thirty-one thousand, three hundred thirty-one".