815384231 has 8 divisors (see below), whose sum is σ = 835082304. Its totient is φ = 795916800.

The previous prime is 815384197. The next prime is 815384233. The reversal of 815384231 is 132483518.

It is a happy number.

815384231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-815384231 is a prime.

It is a super-2 number, since 2×815384231² = 1329702888326922722, 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 = 815384191 and 815384200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815384233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50495 + ... + 64656.

It is an arithmetic number, because the mean of its divisors is an integer number (104385288).

Almost surely, 2^815384231 is an apocalyptic number.

815384231 is a deficient number, since it is larger than the sum of its proper divisors (19698073).

815384231 is a wasteful number, since it uses less digits than its factorization.

815384231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115321.

The product of its digits is 23040, while the sum is 35.

The square root of 815384231 is about 28554.9335667236. The cubic root of 815384231 is about 934.2306313581.

The spelling of 815384231 in words is "eight hundred fifteen million, three hundred eighty-four thousand, two hundred thirty-one".