1311472241 has 4 divisors (see below), whose sum is σ = 1316139684. Its totient is φ = 1306804800.

The previous prime is 1311472219. The next prime is 1311472247. The reversal of 1311472241 is 1422741131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 463497841 + 847974400 = 21529^2 + 29120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311472241 - 2⁶ = 1311472177 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 1311472241.

It is not an unprimeable number, because it can be changed into a prime (1311472247) 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, 2333300 + ... + 2333861.

It is an arithmetic number, because the mean of its divisors is an integer number (329034921).

Almost surely, 2^1311472241 is an apocalyptic number.

It is an amenable number.

1311472241 is a deficient number, since it is larger than the sum of its proper divisors (4667443).

1311472241 is an equidigital number, since it uses as much as digits as its factorization.

1311472241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4667442.

The product of its digits is 1344, while the sum is 26.

The square root of 1311472241 is about 36214.2546658080. The cubic root of 1311472241 is about 1094.5939268393.

The spelling of 1311472241 in words is "one billion, three hundred eleven million, four hundred seventy-two thousand, two hundred forty-one".