83902631 has 4 divisors (see below), whose sum is σ = 83951472. Its totient is φ = 83853792.

The previous prime is 83902591. The next prime is 83902639. The reversal of 83902631 is 13620938.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83902631 is a prime.

It is a super-2 number, since 2×83902631² = 14079302977444322, 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 (83902639) 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, 21746 + ... + 25311.

It is an arithmetic number, because the mean of its divisors is an integer number (20987868).

Almost surely, 2^83902631 is an apocalyptic number.

83902631 is a deficient number, since it is larger than the sum of its proper divisors (48841).

83902631 is a wasteful number, since it uses less digits than its factorization.

83902631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48840.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 83902631 is about 9159.8379352475. The cubic root of 83902631 is about 437.7826305478.

The spelling of 83902631 in words is "eighty-three million, nine hundred two thousand, six hundred thirty-one".