102320131 has 2 divisors, whose sum is σ = 102320132. Its totient is φ = 102320130.

The previous prime is 102320129. The next prime is 102320143. The reversal of 102320131 is 131023201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102320131 - 2¹ = 102320129 is a prime.

It is a super-2 number, since 2×102320131² = 20938818415714322, which contains 22 as substring.

Together with 102320129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102320191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51160065 + 51160066.

It is an arithmetic number, because the mean of its divisors is an integer number (51160066).

Almost surely, 2^102320131 is an apocalyptic number.

102320131 is a deficient number, since it is larger than the sum of its proper divisors (1).

102320131 is an equidigital number, since it uses as much as digits as its factorization.

102320131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 102320131 is about 10115.3413684364. The cubic root of 102320131 is about 467.7211719074.

Adding to 102320131 its reverse (131023201), we get a palindrome (233343332).

The spelling of 102320131 in words is "one hundred two million, three hundred twenty thousand, one hundred thirty-one".