1317913065 has 96 divisors (see below), whose sum is σ = 2744098560. Its totient is φ = 598364928.

The previous prime is 1317913057. The next prime is 1317913073. The reversal of 1317913065 is 5603197131.

1317913065 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1317913057) and next prime (1317913073).

It is not a de Polignac number, because 1317913065 - 2³ = 1317913057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1104109 + ... + 1105301.

It is an arithmetic number, because the mean of its divisors is an integer number (28584360).

Almost surely, 2^1317913065 is an apocalyptic number.

1317913065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1317913065 is an abundant number, since it is smaller than the sum of its proper divisors (1426185495).

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

1317913065 is a wasteful number, since it uses less digits than its factorization.

1317913065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 1317913065 is about 36303.0723906393. The cubic root of 1317913065 is about 1096.3829027905.

It can be divided in two parts, 13179 and 13065, that added together give a square (26244 = 162²).

The spelling of 1317913065 in words is "one billion, three hundred seventeen million, nine hundred thirteen thousand, sixty-five".