1313005140 has 240 divisors, whose sum is σ = 4346939520. Its totient is φ = 331119360.

The previous prime is 1313005139. The next prime is 1313005153. The reversal of 1313005140 is 415003131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4880926 + ... + 4881194.

It is an arithmetic number, because the mean of its divisors is an integer number (18112248).

Almost surely, 2^1313005140 is an apocalyptic number.

1313005140 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 1313005140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2173469760).

1313005140 is an abundant number, since it is smaller than the sum of its proper divisors (3033934380).

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

1313005140 is a wasteful number, since it uses less digits than its factorization.

1313005140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1313005140 is about 36235.4127891487. The cubic root of 1313005140 is about 1095.0202285623.

Adding to 1313005140 its reverse (415003131), we get a palindrome (1728008271).

The spelling of 1313005140 in words is "one billion, three hundred thirteen million, five thousand, one hundred forty".