1331064401 has 2 divisors, whose sum is σ = 1331064402. Its totient is φ = 1331064400.

The previous prime is 1331064389. The next prime is 1331064409. The reversal of 1331064401 is 1044601331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978188176 + 352876225 = 31276^2 + 18785^2 .

It is an emirp because it is prime and its reverse (1044601331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331064401 - 2⁶ = 1331064337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331064409) 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, 665532200 + 665532201.

It is an arithmetic number, because the mean of its divisors is an integer number (665532201).

Almost surely, 2^1331064401 is an apocalyptic number.

It is an amenable number.

1331064401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331064401 is an equidigital number, since it uses as much as digits as its factorization.

1331064401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1331064401 is about 36483.7553028742. The cubic root of 1331064401 is about 1100.0177410362.

Adding to 1331064401 its reverse (1044601331), we get a palindrome (2375665732).

The spelling of 1331064401 in words is "one billion, three hundred thirty-one million, sixty-four thousand, four hundred one".