113031311 has 4 divisors (see below), whose sum is σ = 113605272. Its totient is φ = 112457352.

The previous prime is 113031307. The next prime is 113031313. The reversal of 113031311 is 113130311.

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 113031311 - 2² = 113031307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113031313) 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, 286685 + ... + 287078.

It is an arithmetic number, because the mean of its divisors is an integer number (28401318).

Almost surely, 2^113031311 is an apocalyptic number.

113031311 is a deficient number, since it is larger than the sum of its proper divisors (573961).

113031311 is an equidigital number, since it uses as much as digits as its factorization.

113031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573960.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 113031311 is about 10631.6184562841. The cubic root of 113031311 is about 483.5034622125.

Adding to 113031311 its reverse (113130311), we get a palindrome (226161622).

The spelling of 113031311 in words is "one hundred thirteen million, thirty-one thousand, three hundred eleven".