102391807 has 8 divisors (see below), whose sum is σ = 117127296. Its totient is φ = 87683352.

The previous prime is 102391787. The next prime is 102391811. The reversal of 102391807 is 708193201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102391807 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 (102391847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2148 + ... + 14470.

It is an arithmetic number, because the mean of its divisors is an integer number (14640912).

Almost surely, 2^102391807 is an apocalyptic number.

102391807 is a deficient number, since it is larger than the sum of its proper divisors (14735489).

102391807 is a wasteful number, since it uses less digits than its factorization.

102391807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13517.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 102391807 is about 10118.8836834900. The cubic root of 102391807 is about 467.8303604493.

The spelling of 102391807 in words is "one hundred two million, three hundred ninety-one thousand, eight hundred seven".