1312160291 has 4 divisors (see below), whose sum is σ = 1413095712. Its totient is φ = 1211224872.

The previous prime is 1312160287. The next prime is 1312160293. The reversal of 1312160291 is 1920612131.

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

It is not a de Polignac number, because 1312160291 - 2² = 1312160287 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 1312160291.

It is not an unprimeable number, because it can be changed into a prime (1312160293) 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, 50467691 + ... + 50467716.

It is an arithmetic number, because the mean of its divisors is an integer number (353273928).

Almost surely, 2^1312160291 is an apocalyptic number.

1312160291 is a deficient number, since it is larger than the sum of its proper divisors (100935421).

1312160291 is a wasteful number, since it uses less digits than its factorization.

1312160291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100935420.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1312160291 is about 36223.7531324406. The cubic root of 1312160291 is about 1094.7853157375.

The spelling of 1312160291 in words is "one billion, three hundred twelve million, one hundred sixty thousand, two hundred ninety-one".