1312241201 has 2 divisors, whose sum is σ = 1312241202. Its totient is φ = 1312241200.

The previous prime is 1312241197. The next prime is 1312241207. The reversal of 1312241201 is 1021422131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1179991201 + 132250000 = 34351^2 + 11500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312241201 - 2² = 1312241197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312241201.

It is not a weakly prime, because it can be changed into another prime (1312241207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656120600 + 656120601.

It is an arithmetic number, because the mean of its divisors is an integer number (656120601).

Almost surely, 2^1312241201 is an apocalyptic number.

It is an amenable number.

1312241201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312241201 is an equidigital number, since it uses as much as digits as its factorization.

1312241201 is an evil number, because the sum of its binary digits is even.

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

The square root of 1312241201 is about 36224.8699238520. The cubic root of 1312241201 is about 1094.8078173734.

Adding to 1312241201 its reverse (1021422131), we get a palindrome (2333663332).

The spelling of 1312241201 in words is "one billion, three hundred twelve million, two hundred forty-one thousand, two hundred one".