102312312140 has 24 divisors (see below), whose sum is σ = 215087171040. Its totient is φ = 40880864768.

The previous prime is 102312312119. The next prime is 102312312163. The reversal of 102312312140 is 41213213201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2734712 + ... + 2771871.

It is an arithmetic number, because the mean of its divisors is an integer number (8961965460).

Almost surely, 2^102312312140 is an apocalyptic number.

102312312140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102312312140 is an abundant number, since it is smaller than the sum of its proper divisors (112774858900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102312312140 is a wasteful number, since it uses less digits than its factorization.

102312312140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5507521 (or 5507519 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 102312312140 its reverse (41213213201), we get a palindrome (143525525341).

The spelling of 102312312140 in words is "one hundred two billion, three hundred twelve million, three hundred twelve thousand, one hundred forty".