815080313 has 2 divisors, whose sum is σ = 815080314. Its totient is φ = 815080312.

The previous prime is 815080237. The next prime is 815080327. The reversal of 815080313 is 313080518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806389609 + 8690704 = 28397^2 + 2948^2 .

It is a cyclic number.

It is not a de Polignac number, because 815080313 - 2¹⁰ = 815079289 is a prime.

It is not a weakly prime, because it can be changed into another prime (815080913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407540156 + 407540157.

It is an arithmetic number, because the mean of its divisors is an integer number (407540157).

Almost surely, 2^815080313 is an apocalyptic number.

It is an amenable number.

815080313 is a deficient number, since it is larger than the sum of its proper divisors (1).

815080313 is an equidigital number, since it uses as much as digits as its factorization.

815080313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 815080313 is about 28549.6114334329. The cubic root of 815080313 is about 934.1145450690.

The spelling of 815080313 in words is "eight hundred fifteen million, eighty thousand, three hundred thirteen".