102391108 has 24 divisors (see below), whose sum is σ = 181560960. Its totient is φ = 50520960.

The previous prime is 102391103. The next prime is 102391129. The reversal of 102391108 is 801193201.

It is a super-3 number, since 3×102391108³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (102391103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161953 + ... + 162583.

It is an arithmetic number, because the mean of its divisors is an integer number (7565040).

Almost surely, 2^102391108 is an apocalyptic number.

It is an amenable number.

102391108 is a deficient number, since it is larger than the sum of its proper divisors (79169852).

102391108 is a wasteful number, since it uses less digits than its factorization.

102391108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 102391108 is about 10118.8491440480. The cubic root of 102391108 is about 467.8292958649.

The spelling of 102391108 in words is "one hundred two million, three hundred ninety-one thousand, one hundred eight".