1316712399 has 4 divisors (see below), whose sum is σ = 1755616536. Its totient is φ = 877808264.

The previous prime is 1316712391. The next prime is 1316712401. The reversal of 1316712399 is 9932176131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1316712399 - 2³ = 1316712391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1316712399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316712391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219452064 + ... + 219452069.

It is an arithmetic number, because the mean of its divisors is an integer number (438904134).

Almost surely, 2^1316712399 is an apocalyptic number.

1316712399 is a deficient number, since it is larger than the sum of its proper divisors (438904137).

1316712399 is an equidigital number, since it uses as much as digits as its factorization.

1316712399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438904136.

The product of its digits is 61236, while the sum is 42.

The square root of 1316712399 is about 36286.5319230152. The cubic root of 1316712399 is about 1096.0498536006.

The spelling of 1316712399 in words is "one billion, three hundred sixteen million, seven hundred twelve thousand, three hundred ninety-nine".