1317106520 has 32 divisors (see below), whose sum is σ = 2965101120. Its totient is φ = 526556160.

The previous prime is 1317106519. The next prime is 1317106529. The reversal of 1317106520 is 256017131.

1317106520 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×1317106520³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1317106520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317106529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75329 + ... + 91151.

It is an arithmetic number, because the mean of its divisors is an integer number (92659410).

Almost surely, 2^1317106520 is an apocalyptic number.

1317106520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1317106520 is an abundant number, since it is smaller than the sum of its proper divisors (1647994600).

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

1317106520 is a wasteful number, since it uses less digits than its factorization.

1317106520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17915 (or 17911 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1317106520 is about 36291.9621955055. The cubic root of 1317106520 is about 1096.1591999726.

The spelling of 1317106520 in words is "one billion, three hundred seventeen million, one hundred six thousand, five hundred twenty".