79823231 has 4 divisors (see below), whose sum is σ = 79882992. Its totient is φ = 79763472.

The previous prime is 79823153. The next prime is 79823239. The reversal of 79823231 is 13232897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13232897 = 47 ⋅281551.

It is a cyclic number.

It is not a de Polignac number, because 79823231 - 2²⁶ = 12714367 is a prime.

It is a super-2 number, since 2×79823231² = 12743496414558722, 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 = 79823191 and 79823200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79823239) 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, 27830 + ... + 30563.

It is an arithmetic number, because the mean of its divisors is an integer number (19970748).

Almost surely, 2^79823231 is an apocalyptic number.

79823231 is a deficient number, since it is larger than the sum of its proper divisors (59761).

79823231 is a wasteful number, since it uses less digits than its factorization.

79823231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59760.

The product of its digits is 18144, while the sum is 35.

The square root of 79823231 is about 8934.3847577771. The cubic root of 79823231 is about 430.5693395801.

The spelling of 79823231 in words is "seventy-nine million, eight hundred twenty-three thousand, two hundred thirty-one".