83700623431 has 4 divisors (see below), whose sum is σ = 83701557000. Its totient is φ = 83699689864.

The previous prime is 83700623389. The next prime is 83700623483. The reversal of 83700623431 is 13432600738.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13432600738 = 2 ⋅6716300369.

It is a cyclic number.

It is not a de Polignac number, because 83700623431 - 2⁹ = 83700622919 is a prime.

It is a super-2 number, since 2×83700623431² (a number of 23 digits) 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 (83700623731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316081 + ... + 517018.

It is an arithmetic number, because the mean of its divisors is an integer number (20925389250).

Almost surely, 2^83700623431 is an apocalyptic number.

83700623431 is a deficient number, since it is larger than the sum of its proper divisors (933569).

83700623431 is a wasteful number, since it uses less digits than its factorization.

83700623431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933568.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 83700623431 in words is "eighty-three billion, seven hundred million, six hundred twenty-three thousand, four hundred thirty-one".