1312165241 has 8 divisors (see below), whose sum is σ = 1356153600. Its totient is φ = 1268280720.

The previous prime is 1312165237. The next prime is 1312165243. The reversal of 1312165241 is 1425612131.

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 1312165241 - 2² = 1312165237 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 1312165241.

It is not an unprimeable number, because it can be changed into a prime (1312165243) 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, 170 + ... + 51228.

It is an arithmetic number, because the mean of its divisors is an integer number (169519200).

Almost surely, 2^1312165241 is an apocalyptic number.

It is an amenable number.

1312165241 is a deficient number, since it is larger than the sum of its proper divisors (43988359).

1312165241 is an equidigital number, since it uses as much as digits as its factorization.

1312165241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51919.

The product of its digits is 1440, while the sum is 26.

The square root of 1312165241 is about 36223.8214577093. The cubic root of 1312165241 is about 1094.7866923936.

Adding to 1312165241 its reverse (1425612131), we get a palindrome (2737777372).

The spelling of 1312165241 in words is "one billion, three hundred twelve million, one hundred sixty-five thousand, two hundred forty-one".