102320137 has 4 divisors (see below), whose sum is σ = 102363520. Its totient is φ = 102276756.

The previous prime is 102320131. The next prime is 102320143. The reversal of 102320137 is 731023201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (102320131) and next prime (102320143).

It is a cyclic number.

It is not a de Polignac number, because 102320137 - 2³ = 102320129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102320131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17937 + ... + 22942.

It is an arithmetic number, because the mean of its divisors is an integer number (25590880).

Almost surely, 2^102320137 is an apocalyptic number.

It is an amenable number.

102320137 is a deficient number, since it is larger than the sum of its proper divisors (43383).

102320137 is an equidigital number, since it uses as much as digits as its factorization.

102320137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43382.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 102320137 is about 10115.3416650156. The cubic root of 102320137 is about 467.7211810497.

Adding to 102320137 its reverse (731023201), we get a palindrome (833343338).

The spelling of 102320137 in words is "one hundred two million, three hundred twenty thousand, one hundred thirty-seven".