102320399 has 16 divisors (see below), whose sum is σ = 113799168. Its totient is φ = 91504512.

The previous prime is 102320389. The next prime is 102320411. The reversal of 102320399 is 993023201.

It is a cyclic number.

It is not a de Polignac number, because 102320399 - 2⁸ = 102320143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102320329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64514 + ... + 66080.

It is an arithmetic number, because the mean of its divisors is an integer number (7112448).

Almost surely, 2^102320399 is an apocalyptic number.

102320399 is a deficient number, since it is larger than the sum of its proper divisors (11478769).

102320399 is a wasteful number, since it uses less digits than its factorization.

102320399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 102320399 is about 10115.3546156326. The cubic root of 102320399 is about 467.7215802636.

The spelling of 102320399 in words is "one hundred two million, three hundred twenty thousand, three hundred ninety-nine".