1310312140 has 24 divisors (see below), whose sum is σ = 2752374240. Its totient is φ = 523987968.

The previous prime is 1310312137. The next prime is 1310312141. The reversal of 1310312140 is 412130131.

It is not an unprimeable number, because it can be changed into a prime (1310312141) 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, 109996 + ... + 121324.

It is an arithmetic number, because the mean of its divisors is an integer number (114682260).

Almost surely, 2^1310312140 is an apocalyptic number.

1310312140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310312140 is an abundant number, since it is smaller than the sum of its proper divisors (1442062100).

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

1310312140 is a wasteful number, since it uses less digits than its factorization.

1310312140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17121 (or 17119 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1310312140 is about 36198.2339348206. The cubic root of 1310312140 is about 1094.2710799710.

Adding to 1310312140 its reverse (412130131), we get a palindrome (1722442271).

The spelling of 1310312140 in words is "one billion, three hundred ten million, three hundred twelve thousand, one hundred forty".