83125631 has 16 divisors (see below), whose sum is σ = 90201600. Its totient is φ = 76315008.

The previous prime is 83125619. The next prime is 83125649. The reversal of 83125631 is 13652138.

It is a cyclic number.

It is not a de Polignac number, because 83125631 - 2²² = 78931327 is a prime.

It is a super-2 number, since 2×83125631² = 13819741058296322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83125594 and 83125603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83125681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179306 + ... + 179768.

It is an arithmetic number, because the mean of its divisors is an integer number (5637600).

Almost surely, 2^83125631 is an apocalyptic number.

83125631 is a deficient number, since it is larger than the sum of its proper divisors (7075969).

83125631 is a wasteful number, since it uses less digits than its factorization.

83125631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718.

The product of its digits is 4320, while the sum is 29.

The square root of 83125631 is about 9117.3258689157. The cubic root of 83125631 is about 436.4270410563.

Adding to 83125631 its reverse (13652138), we get a palindrome (96777769).

It can be divided in two parts, 831 and 25631, that added together give a palindrome (26462).

The spelling of 83125631 in words is "eighty-three million, one hundred twenty-five thousand, six hundred thirty-one".