113211817 has 4 divisors (see below), whose sum is σ = 113258880. Its totient is φ = 113164756.

The previous prime is 113211781. The next prime is 113211821. The reversal of 113211817 is 718112311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113211817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113211791 and 113211800.

It is not an unprimeable number, because it can be changed into a prime (113211877) 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, 19717 + ... + 24802.

It is an arithmetic number, because the mean of its divisors is an integer number (28314720).

Almost surely, 2^113211817 is an apocalyptic number.

It is an amenable number.

113211817 is a deficient number, since it is larger than the sum of its proper divisors (47063).

113211817 is an equidigital number, since it uses as much as digits as its factorization.

113211817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47062.

The product of its digits is 336, while the sum is 25.

The square root of 113211817 is about 10640.1041818208. The cubic root of 113211817 is about 483.7607032020.

The spelling of 113211817 in words is "one hundred thirteen million, two hundred eleven thousand, eight hundred seventeen".