87313199 has 2 divisors, whose sum is σ = 87313200. Its totient is φ = 87313198.

The previous prime is 87313159. The next prime is 87313201. The reversal of 87313199 is 99131378.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87313199 - 2¹⁶ = 87247663 is a prime.

It is a super-2 number, since 2×87313199² = 15247189439227202, which contains 22 as substring.

Together with 87313201, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87313159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43656599 + 43656600.

It is an arithmetic number, because the mean of its divisors is an integer number (43656600).

Almost surely, 2^87313199 is an apocalyptic number.

87313199 is a deficient number, since it is larger than the sum of its proper divisors (1).

87313199 is an equidigital number, since it uses as much as digits as its factorization.

87313199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 87313199 is about 9344.1531986585. The cubic root of 87313199 is about 443.6358493925.

The spelling of 87313199 in words is "eighty-seven million, three hundred thirteen thousand, one hundred ninety-nine".