1317250155 has 16 divisors (see below), whose sum is σ = 2269723680. Its totient is φ = 648492288.

The previous prime is 1317250139. The next prime is 1317250189. The reversal of 1317250155 is 5510527131.

It is not a de Polignac number, because 1317250155 - 2⁴ = 1317250139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3377370 + ... + 3377759.

It is an arithmetic number, because the mean of its divisors is an integer number (141857730).

Almost surely, 2^1317250155 is an apocalyptic number.

1317250155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1317250155 is a deficient number, since it is larger than the sum of its proper divisors (952473525).

1317250155 is a wasteful number, since it uses less digits than its factorization.

1317250155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755150.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 1317250155 is about 36293.9410232617. The cubic root of 1317250155 is about 1096.1990451689.

Adding to 1317250155 its reverse (5510527131), we get a palindrome (6827777286).

The spelling of 1317250155 in words is "one billion, three hundred seventeen million, two hundred fifty thousand, one hundred fifty-five".