102131312 has 20 divisors (see below), whose sum is σ = 198130920. Its totient is φ = 51000768.

The previous prime is 102131269. The next prime is 102131347. The reversal of 102131312 is 213131201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10514 + ... + 17742.

It is an arithmetic number, because the mean of its divisors is an integer number (9906546).

Almost surely, 2^102131312 is an apocalyptic number.

It is an amenable number.

102131312 is a deficient number, since it is larger than the sum of its proper divisors (95999608).

102131312 is an equidigital number, since it uses as much as digits as its factorization.

102131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8120 (or 8114 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 102131312 is about 10106.0037601418. The cubic root of 102131312 is about 467.4332877820.

Adding to 102131312 its reverse (213131201), we get a palindrome (315262513).

The spelling of 102131312 in words is "one hundred two million, one hundred thirty-one thousand, three hundred twelve".