83513631 has 4 divisors (see below), whose sum is σ = 111351512. Its totient is φ = 55675752.

The previous prime is 83513627. The next prime is 83513653. The reversal of 83513631 is 13631538.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83513631 - 2² = 83513627 is a prime.

It is a super-2 number, since 2×83513631² = 13949053125608322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83513671) 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, 13918936 + ... + 13918941.

It is an arithmetic number, because the mean of its divisors is an integer number (27837878).

Almost surely, 2^83513631 is an apocalyptic number.

83513631 is a deficient number, since it is larger than the sum of its proper divisors (27837881).

83513631 is a wasteful number, since it uses less digits than its factorization.

83513631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27837880.

The product of its digits is 6480, while the sum is 30.

The square root of 83513631 is about 9138.5792659472. The cubic root of 83513631 is about 437.1050144981.

The spelling of 83513631 in words is "eighty-three million, five hundred thirteen thousand, six hundred thirty-one".