807681331 has 2 divisors, whose sum is σ = 807681332. Its totient is φ = 807681330.

The previous prime is 807681313. The next prime is 807681337. The reversal of 807681331 is 133186708.

Together with previous prime (807681313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 807681331 - 2²¹ = 805584179 is a prime.

It is a super-2 number, since 2×807681331² = 1304698264891863122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (807681337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403840665 + 403840666.

It is an arithmetic number, because the mean of its divisors is an integer number (403840666).

Almost surely, 2^807681331 is an apocalyptic number.

807681331 is a deficient number, since it is larger than the sum of its proper divisors (1).

807681331 is an equidigital number, since it uses as much as digits as its factorization.

807681331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 807681331 is about 28419.7348861667. The cubic root of 807681331 is about 931.2794395390.

The spelling of 807681331 in words is "eight hundred seven million, six hundred eighty-one thousand, three hundred thirty-one".