1331402441 has 4 divisors (see below), whose sum is σ = 1377312900. Its totient is φ = 1285491984.

The previous prime is 1331402393. The next prime is 1331402461. The reversal of 1331402441 is 1442041331.

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 439782841 + 891619600 = 20971^2 + 29860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331402441 - 2⁶ = 1331402377 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 (1331402461) 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, 22955186 + ... + 22955243.

It is an arithmetic number, because the mean of its divisors is an integer number (344328225).

Almost surely, 2^1331402441 is an apocalyptic number.

It is an amenable number.

1331402441 is a deficient number, since it is larger than the sum of its proper divisors (45910459).

1331402441 is an equidigital number, since it uses as much as digits as its factorization.

1331402441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45910458.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1331402441 is about 36488.3877555586. The cubic root of 1331402441 is about 1100.1108541174.

Adding to 1331402441 its reverse (1442041331), we get a palindrome (2773443772).

The spelling of 1331402441 in words is "one billion, three hundred thirty-one million, four hundred two thousand, four hundred forty-one".