1331244434401 has 16 divisors (see below), whose sum is σ = 1550469682944. Its totient is φ = 1119290537664.

The previous prime is 1331244434389. The next prime is 1331244434411. The reversal of 1331244434401 is 1044344421331.

It is a cyclic number.

It is not a de Polignac number, because 1331244434401 - 2⁵ = 1331244434369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331244434411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1301511 + ... + 2087203.

It is an arithmetic number, because the mean of its divisors is an integer number (96904355184).

Almost surely, 2^{1331244434401} is an apocalyptic number.

It is an amenable number.

1331244434401 is a deficient number, since it is larger than the sum of its proper divisors (219225248543).

1331244434401 is an equidigital number, since it uses as much as digits as its factorization.

1331244434401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790320.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 1331244434401 its reverse (1044344421331), we get a palindrome (2375588855732).

The spelling of 1331244434401 in words is "one trillion, three hundred thirty-one billion, two hundred forty-four million, four hundred thirty-four thousand, four hundred one".