1321314243441 has 32 divisors (see below), whose sum is σ = 1903715622912. Its totient is φ = 812791774080.

The previous prime is 1321314243371. The next prime is 1321314243449. The reversal of 1321314243441 is 1443424131231.

It is a happy number.

It is not a de Polignac number, because 1321314243441 - 2¹⁵ = 1321314210673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321314243449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317275 + ... + 1656288.

It is an arithmetic number, because the mean of its divisors is an integer number (59491113216).

Almost surely, 2^{1321314243441} is an apocalyptic number.

It is an amenable number.

1321314243441 is a deficient number, since it is larger than the sum of its proper divisors (582401379471).

1321314243441 is a wasteful number, since it uses less digits than its factorization.

1321314243441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973933.

The product of its digits is 27648, while the sum is 33.

Adding to 1321314243441 its reverse (1443424131231), we get a palindrome (2764738374672).

The spelling of 1321314243441 in words is "one trillion, three hundred twenty-one billion, three hundred fourteen million, two hundred forty-three thousand, four hundred forty-one".