102304157 has 2 divisors, whose sum is σ = 102304158. Its totient is φ = 102304156.

The previous prime is 102304129. The next prime is 102304159. The reversal of 102304157 is 751403201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88717561 + 13586596 = 9419^2 + 3686^2 .

It is an emirp because it is prime and its reverse (751403201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102304157 - 2⁶ = 102304093 is a prime.

It is a super-2 number, since 2×102304157² = 20932281078961298, which contains 22 as substring.

Together with 102304159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102304159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51152078 + 51152079.

It is an arithmetic number, because the mean of its divisors is an integer number (51152079).

Almost surely, 2^102304157 is an apocalyptic number.

It is an amenable number.

102304157 is a deficient number, since it is larger than the sum of its proper divisors (1).

102304157 is an equidigital number, since it uses as much as digits as its factorization.

102304157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 102304157 is about 10114.5517448872. The cubic root of 102304157 is about 467.6968307644.

Adding to 102304157 its reverse (751403201), we get a palindrome (853707358).

The spelling of 102304157 in words is "one hundred two million, three hundred four thousand, one hundred fifty-seven".