113217812 has 6 divisors (see below), whose sum is σ = 198131178. Its totient is φ = 56608904.

The previous prime is 113217803. The next prime is 113217821. The reversal of 113217812 is 218712311.

It is an interprime number because it is at equal distance from previous prime (113217803) and next prime (113217821).

It can be written as a sum of positive squares in only one way, i.e., 110796676 + 2421136 = 10526^2 + 1556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14152223 + ... + 14152230.

It is an arithmetic number, because the mean of its divisors is an integer number (33021863).

Almost surely, 2^113217812 is an apocalyptic number.

It is an amenable number.

113217812 is a deficient number, since it is larger than the sum of its proper divisors (84913366).

113217812 is a wasteful number, since it uses less digits than its factorization.

113217812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28304457 (or 28304455 counting only the distinct ones).

The product of its digits is 672, while the sum is 26.

The square root of 113217812 is about 10640.3858952577. The cubic root of 113217812 is about 483.7692420463.

The spelling of 113217812 in words is "one hundred thirteen million, two hundred seventeen thousand, eight hundred twelve".