102315908 has 6 divisors (see below), whose sum is σ = 179052846. Its totient is φ = 51157952.

The previous prime is 102315907. The next prime is 102316001. The reversal of 102315908 is 809513201.

It can be written as a sum of positive squares in only one way, i.e., 55830784 + 46485124 = 7472^2 + 6818^2 .

It is not an unprimeable number, because it can be changed into a prime (102315907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12789485 + ... + 12789492.

It is an arithmetic number, because the mean of its divisors is an integer number (29842141).

Almost surely, 2^102315908 is an apocalyptic number.

It is an amenable number.

102315908 is a deficient number, since it is larger than the sum of its proper divisors (76736938).

102315908 is a wasteful number, since it uses less digits than its factorization.

102315908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25578981 (or 25578979 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 102315908 is about 10115.1326239452. The cubic root of 102315908 is about 467.7147371565.

The spelling of 102315908 in words is "one hundred two million, three hundred fifteen thousand, nine hundred eight".