1313312015 has 8 divisors (see below), whose sum is σ = 1658920560. Its totient is φ = 995352192.

The previous prime is 1313311997. The next prime is 1313312017. The reversal of 1313312015 is 5102133131.

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 1313312015 - 2¹⁰ = 1313310991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313312017) 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, 6912074 + ... + 6912263.

It is an arithmetic number, because the mean of its divisors is an integer number (207365070).

Almost surely, 2^1313312015 is an apocalyptic number.

1313312015 is a deficient number, since it is larger than the sum of its proper divisors (345608545).

1313312015 is a wasteful number, since it uses less digits than its factorization.

1313312015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13824361.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1313312015 is about 36239.6470043515. The cubic root of 1313312015 is about 1095.1055311369.

Adding to 1313312015 its reverse (5102133131), we get a palindrome (6415445146).

The spelling of 1313312015 in words is "one billion, three hundred thirteen million, three hundred twelve thousand, fifteen".