102383991 has 12 divisors (see below), whose sum is σ = 148656768. Its totient is φ = 67901184.

The previous prime is 102383959. The next prime is 102383993. The reversal of 102383991 is 199383201.

It is not a de Polignac number, because 102383991 - 2⁵ = 102383959 is a prime.

It is a super-2 number, since 2×102383991² = 20964963226176162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102383993) 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 in 11 ways as a sum of consecutive naturals, for example, 27735 + ... + 31208.

It is an arithmetic number, because the mean of its divisors is an integer number (12388064).

Almost surely, 2^102383991 is an apocalyptic number.

102383991 is a deficient number, since it is larger than the sum of its proper divisors (46272777).

102383991 is a wasteful number, since it uses less digits than its factorization.

102383991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59142 (or 59139 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 102383991 is about 10118.4974675097. The cubic root of 102383991 is about 467.8184563226.

The spelling of 102383991 in words is "one hundred two million, three hundred eighty-three thousand, nine hundred ninety-one".