1331412432401 has 4 divisors (see below), whose sum is σ = 1363885906404. Its totient is φ = 1298938958400.

The previous prime is 1331412432323. The next prime is 1331412432421. The reversal of 1331412432401 is 1042342141331.

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 783005535376 + 548406897025 = 884876^2 + 740545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331412432401 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 (1331412432421) 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, 16236736940 + ... + 16236737021.

It is an arithmetic number, because the mean of its divisors is an integer number (340971476601).

Almost surely, 2^{1331412432401} is an apocalyptic number.

It is an amenable number.

1331412432401 is a deficient number, since it is larger than the sum of its proper divisors (32473474003).

1331412432401 is an equidigital number, since it uses as much as digits as its factorization.

1331412432401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32473474002.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 1331412432401 its reverse (1042342141331), we get a palindrome (2373754573732).

The spelling of 1331412432401 in words is "one trillion, three hundred thirty-one billion, four hundred twelve million, four hundred thirty-two thousand, four hundred one".