1312240441 has 2 divisors, whose sum is σ = 1312240442. Its totient is φ = 1312240440.

The previous prime is 1312240399. The next prime is 1312240469. The reversal of 1312240441 is 1440422131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1158381225 + 153859216 = 34035^2 + 12404^2 .

It is an emirp because it is prime and its reverse (1440422131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312240441 - 2⁷ = 1312240313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312244441) 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 as a sum of consecutive naturals, namely, 656120220 + 656120221.

It is an arithmetic number, because the mean of its divisors is an integer number (656120221).

Almost surely, 2^1312240441 is an apocalyptic number.

It is an amenable number.

1312240441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312240441 is an equidigital number, since it uses as much as digits as its factorization.

1312240441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1312240441 is about 36224.8594338198. The cubic root of 1312240441 is about 1094.8076060164.

Adding to 1312240441 its reverse (1440422131), we get a palindrome (2752662572).

The spelling of 1312240441 in words is "one billion, three hundred twelve million, two hundred forty thousand, four hundred forty-one".