113821816 has 8 divisors (see below), whose sum is σ = 213415920. Its totient is φ = 56910904.

The previous prime is 113821787. The next prime is 113821823. The reversal of 113821816 is 618128311.

It is a tau number, because it is divible by the number of its divisors (8).

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, 7113856 + ... + 7113871.

It is an arithmetic number, because the mean of its divisors is an integer number (26676990).

Almost surely, 2^113821816 is an apocalyptic number.

It is an amenable number.

113821816 is a deficient number, since it is larger than the sum of its proper divisors (99594104).

113821816 is a wasteful number, since it uses less digits than its factorization.

113821816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14227733 (or 14227729 counting only the distinct ones).

The product of its digits is 2304, while the sum is 31.

The square root of 113821816 is about 10668.7307586235. The cubic root of 113821816 is about 484.6280011393.

The spelling of 113821816 in words is "one hundred thirteen million, eight hundred twenty-one thousand, eight hundred sixteen".