1313930280 has 128 divisors (see below), whose sum is σ = 4348753920. Its totient is φ = 315525120.

The previous prime is 1313930263. The next prime is 1313930287. The reversal of 1313930280 is 820393131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1313930287) 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, 53689 + ... + 74231.

It is an arithmetic number, because the mean of its divisors is an integer number (33974640).

Almost surely, 2^1313930280 is an apocalyptic number.

1313930280 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 1313930280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2174376960).

1313930280 is an abundant number, since it is smaller than the sum of its proper divisors (3034823640).

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

1313930280 is a wasteful number, since it uses less digits than its factorization.

1313930280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20611 (or 20607 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1313930280 is about 36248.1762299843. The cubic root of 1313930280 is about 1095.2773509823.

The spelling of 1313930280 in words is "one billion, three hundred thirteen million, nine hundred thirty thousand, two hundred eighty".