113855631 has 8 divisors (see below), whose sum is σ = 152916144. Its totient is φ = 75349440.

The previous prime is 113855629. The next prime is 113855699. The reversal of 113855631 is 136558311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113855631 - 2¹ = 113855629 is a prime.

It is a super-2 number, since 2×113855631² = 25926209420816322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 113855592 and 113855601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113855611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138100 + ... + 138921.

It is an arithmetic number, because the mean of its divisors is an integer number (19114518).

Almost surely, 2^113855631 is an apocalyptic number.

113855631 is the 6749-th centered pentagonal number.

113855631 is a deficient number, since it is larger than the sum of its proper divisors (39060513).

113855631 is a wasteful number, since it uses less digits than its factorization.

113855631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277161.

The product of its digits is 10800, while the sum is 33.

The square root of 113855631 is about 10670.3154123953. The cubic root of 113855631 is about 484.6759886396.

The spelling of 113855631 in words is "one hundred thirteen million, eight hundred fifty-five thousand, six hundred thirty-one".