102310138 has 12 divisors (see below), whose sum is σ = 178520922. Its totient is φ = 43847160.

The previous prime is 102310121. The next prime is 102310147. The reversal of 102310138 is 831013201.

It can be written as a sum of positive squares in only one way, i.e., 90497169 + 11812969 = 9513^2 + 3437^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 521893 + ... + 522088.

Almost surely, 2^102310138 is an apocalyptic number.

102310138 is a deficient number, since it is larger than the sum of its proper divisors (76210784).

102310138 is a wasteful number, since it uses less digits than its factorization.

102310138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043997 (or 1043990 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 102310138 is about 10114.8474036932. The cubic root of 102310138 is about 467.7059448946.

Adding to 102310138 its reverse (831013201), we get a palindrome (933323339).

The spelling of 102310138 in words is "one hundred two million, three hundred ten thousand, one hundred thirty-eight".