82431873 has 6 divisors (see below), whose sum is σ = 119068274. Its totient is φ = 54954576.

The previous prime is 82431863. The next prime is 82431887. The reversal of 82431873 is 37813428.

It can be written as a sum of positive squares in only one way, i.e., 52751169 + 29680704 = 7263^2 + 5448^2 .

It is not a de Polignac number, because 82431873 - 2⁸ = 82431617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82431863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4579540 + ... + 4579557.

Almost surely, 2^82431873 is an apocalyptic number.

It is an amenable number.

82431873 is a deficient number, since it is larger than the sum of its proper divisors (36636401).

82431873 is a wasteful number, since it uses less digits than its factorization.

82431873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9159103 (or 9159100 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 82431873 is about 9079.2000198255. The cubic root of 82431873 is about 435.2095225291.

The spelling of 82431873 in words is "eighty-two million, four hundred thirty-one thousand, eight hundred seventy-three".