1311975327 has 16 divisors (see below), whose sum is σ = 1983013760. Its totient is φ = 764875872.

The previous prime is 1311975299. The next prime is 1311975331. The reversal of 1311975327 is 7235791131.

It is not a de Polignac number, because 1311975327 - 2²⁴ = 1295198111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311975827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884533 + ... + 886014.

It is an arithmetic number, because the mean of its divisors is an integer number (123938360).

Almost surely, 2^1311975327 is an apocalyptic number.

1311975327 is a deficient number, since it is larger than the sum of its proper divisors (671038433).

1311975327 is a wasteful number, since it uses less digits than its factorization.

1311975327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770582.

The product of its digits is 39690, while the sum is 39.

The square root of 1311975327 is about 36221.1999663181. The cubic root of 1311975327 is about 1094.7338724832.

The spelling of 1311975327 in words is "one billion, three hundred eleven million, nine hundred seventy-five thousand, three hundred twenty-seven".