1313127857 has 8 divisors (see below), whose sum is σ = 1324199520. Its totient is φ = 1302079680.

The previous prime is 1313127797. The next prime is 1313127899. The reversal of 1313127857 is 7587213131.

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 1313127857 - 2¹⁴ = 1313111473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313127857.

It is not an unprimeable number, because it can be changed into a prime (1313127157) 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, 117098 + ... + 127820.

It is an arithmetic number, because the mean of its divisors is an integer number (165524940).

Almost surely, 2^1313127857 is an apocalyptic number.

It is an amenable number.

1313127857 is a deficient number, since it is larger than the sum of its proper divisors (11071663).

1313127857 is a wasteful number, since it uses less digits than its factorization.

1313127857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11743.

The product of its digits is 35280, while the sum is 38.

The square root of 1313127857 is about 36237.1060792663. The cubic root of 1313127857 is about 1095.0543420137.

The spelling of 1313127857 in words is "one billion, three hundred thirteen million, one hundred twenty-seven thousand, eight hundred fifty-seven".