113555231 has 4 divisors (see below), whose sum is σ = 113577000. Its totient is φ = 113533464.

The previous prime is 113555227. The next prime is 113555261. The reversal of 113555231 is 132555311.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 113555231 - 2² = 113555227 is a prime.

It is a super-2 number, since 2×113555231² = 25789580974926722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113555231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113555261) 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, 2120 + ... + 15218.

It is an arithmetic number, because the mean of its divisors is an integer number (28394250).

Almost surely, 2^113555231 is an apocalyptic number.

113555231 is a deficient number, since it is larger than the sum of its proper divisors (21769).

113555231 is an equidigital number, since it uses as much as digits as its factorization.

113555231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21768.

The product of its digits is 2250, while the sum is 26.

The square root of 113555231 is about 10656.2296803325. The cubic root of 113555231 is about 484.2493521393.

The spelling of 113555231 in words is "one hundred thirteen million, five hundred fifty-five thousand, two hundred thirty-one".