1310143140 has 96 divisors (see below), whose sum is σ = 4082400000. Its totient is φ = 348823296.

The previous prime is 1310143127. The next prime is 1310143141. The reversal of 1310143140 is 413410131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1310143141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435361 + ... + 438359.

It is an arithmetic number, because the mean of its divisors is an integer number (42525000).

Almost surely, 2^1310143140 is an apocalyptic number.

1310143140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1310143140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2041200000).

1310143140 is an abundant number, since it is smaller than the sum of its proper divisors (2772256860).

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

1310143140 is a wasteful number, since it uses less digits than its factorization.

1310143140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826 (or 3818 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1310143140 is about 36195.8994915170. The cubic root of 1310143140 is about 1094.2240327171.

Adding to 1310143140 its reverse (413410131), we get a palindrome (1723553271).

The spelling of 1310143140 in words is "one billion, three hundred ten million, one hundred forty-three thousand, one hundred forty".