1315187085 has 8 divisors (see below), whose sum is σ = 2104299360. Its totient is φ = 701433104.

The previous prime is 1315187051. The next prime is 1315187101. The reversal of 1315187085 is 5807815131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1315187085 - 2¹¹ = 1315185037 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43839555 + ... + 43839584.

It is an arithmetic number, because the mean of its divisors is an integer number (263037420).

Almost surely, 2^1315187085 is an apocalyptic number.

1315187085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315187085 is a deficient number, since it is larger than the sum of its proper divisors (789112275).

1315187085 is an equidigital number, since it uses as much as digits as its factorization.

1315187085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87679147.

The product of its (nonzero) digits is 33600, while the sum is 39.

The square root of 1315187085 is about 36265.5081999412. The cubic root of 1315187085 is about 1095.6264591515.

The spelling of 1315187085 in words is "one billion, three hundred fifteen million, one hundred eighty-seven thousand, eighty-five".