1391156313 has 4 divisors (see below), whose sum is σ = 1854875088. Its totient is φ = 927437540.

The previous prime is 1391156297. The next prime is 1391156369. The reversal of 1391156313 is 3136511931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1391156313 - 2⁴ = 1391156297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1391156413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231859383 + ... + 231859388.

It is an arithmetic number, because the mean of its divisors is an integer number (463718772).

Almost surely, 2^1391156313 is an apocalyptic number.

It is an amenable number.

1391156313 is a deficient number, since it is larger than the sum of its proper divisors (463718775).

1391156313 is an equidigital number, since it uses as much as digits as its factorization.

1391156313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463718774.

The product of its digits is 7290, while the sum is 33.

The square root of 1391156313 is about 37298.2079060107. The cubic root of 1391156313 is about 1116.3284087314.

The spelling of 1391156313 in words is "one billion, three hundred ninety-one million, one hundred fifty-six thousand, three hundred thirteen".