78201313 has 16 divisors (see below), whose sum is σ = 85800960. Its totient is φ = 71064000.

The previous prime is 78201301. The next prime is 78201349. The reversal of 78201313 is 31310287.

It is a cyclic number.

It is not a de Polignac number, because 78201313 - 2⁵ = 78201281 is a prime.

It is a super-2 number, since 2×78201313² = 12230890709847938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78201353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32088 + ... + 34438.

It is an arithmetic number, because the mean of its divisors is an integer number (5362560).

Almost surely, 2^78201313 is an apocalyptic number.

It is an amenable number.

78201313 is a deficient number, since it is larger than the sum of its proper divisors (7599647).

78201313 is a wasteful number, since it uses less digits than its factorization.

78201313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 78201313 is about 8843.1506263322. The cubic root of 78201313 is about 427.6331343263.

The spelling of 78201313 in words is "seventy-eight million, two hundred one thousand, three hundred thirteen".