1316251320 has 256 divisors, whose sum is σ = 4276039680. Its totient is φ = 323481600.

The previous prime is 1316251301. The next prime is 1316251361. The reversal of 1316251320 is 231526131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10047655 + ... + 10047785.

It is an arithmetic number, because the mean of its divisors is an integer number (16703280).

Almost surely, 2^1316251320 is an apocalyptic number.

1316251320 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 1316251320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2138019840).

1316251320 is an abundant number, since it is smaller than the sum of its proper divisors (2959788360).

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

1316251320 is a wasteful number, since it uses less digits than its factorization.

1316251320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1316251320 is about 36280.1780591000. The cubic root of 1316251320 is about 1095.9219024572.

Adding to 1316251320 its reverse (231526131), we get a palindrome (1547777451).

The spelling of 1316251320 in words is "one billion, three hundred sixteen million, two hundred fifty-one thousand, three hundred twenty".