815036231 has 2 divisors, whose sum is σ = 815036232. Its totient is φ = 815036230.

The previous prime is 815036203. The next prime is 815036237. The reversal of 815036231 is 132630518.

815036231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 815036231 - 2¹⁴ = 815019847 is a prime.

It is a super-2 number, since 2×815036231² = 1328568115685370722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 815036194 and 815036203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (815036237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407518115 + 407518116.

It is an arithmetic number, because the mean of its divisors is an integer number (407518116).

Almost surely, 2^815036231 is an apocalyptic number.

815036231 is a deficient number, since it is larger than the sum of its proper divisors (1).

815036231 is an equidigital number, since it uses as much as digits as its factorization.

815036231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 815036231 is about 28548.8393984764. The cubic root of 815036231 is about 934.0977048554.

Adding to 815036231 its reverse (132630518), we get a palindrome (947666749).

The spelling of 815036231 in words is "eight hundred fifteen million, thirty-six thousand, two hundred thirty-one".