1317237480 has 192 divisors, whose sum is σ = 4643730000. Its totient is φ = 321896448.

The previous prime is 1317237433. The next prime is 1317237521. The reversal of 1317237480 is 847327131.

1317237480 is a `hidden beast` number, since 1 + 3 + 172 + 3 + 7 + 480 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 109118916 + 1208118564 = 10446^2 + 34758^2 .

It is a super-2 number, since 2×1317237480² = 3470229157433500800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 696376 + ... + 698264.

Almost surely, 2^1317237480 is an apocalyptic number.

1317237480 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 1317237480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2321865000).

1317237480 is an abundant number, since it is smaller than the sum of its proper divisors (3326492520).

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

1317237480 is a wasteful number, since it uses less digits than its factorization.

1317237480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2061 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 1317237480 is about 36293.7664069190. The cubic root of 1317237480 is about 1096.1955291657.

The spelling of 1317237480 in words is "one billion, three hundred seventeen million, two hundred thirty-seven thousand, four hundred eighty".