1312210241 has 4 divisors (see below), whose sum is σ = 1357458900. Its totient is φ = 1266961584.

The previous prime is 1312210201. The next prime is 1312210247. The reversal of 1312210241 is 1420122131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1420122131 = 3217 ⋅441443.

It can be written as a sum of positive squares in 2 ways, for example, as 823977025 + 488233216 = 28705^2 + 22096^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312210241 - 2⁶ = 1312210177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1312210247) 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, 22624286 + ... + 22624343.

It is an arithmetic number, because the mean of its divisors is an integer number (339364725).

Almost surely, 2^1312210241 is an apocalyptic number.

It is an amenable number.

1312210241 is a deficient number, since it is larger than the sum of its proper divisors (45248659).

1312210241 is an equidigital number, since it uses as much as digits as its factorization.

1312210241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45248658.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1312210241 is about 36224.4425906045. The cubic root of 1312210241 is about 1094.7992072905.

Adding to 1312210241 its reverse (1420122131), we get a palindrome (2732332372).

The spelling of 1312210241 in words is "one billion, three hundred twelve million, two hundred ten thousand, two hundred forty-one".