13331420401 has 4 divisors (see below), whose sum is σ = 14356914292. Its totient is φ = 12305926512.

The previous prime is 13331420393. The next prime is 13331420423. The reversal of 13331420401 is 10402413331.

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 3025110001 + 10306310400 = 55001^2 + 101520^2 .

It is a cyclic number.

It is not a de Polignac number, because 13331420401 - 2³ = 13331420393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13331420441) 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, 512746926 + ... + 512746951.

It is an arithmetic number, because the mean of its divisors is an integer number (3589228573).

Almost surely, 2^13331420401 is an apocalyptic number.

It is an amenable number.

13331420401 is a deficient number, since it is larger than the sum of its proper divisors (1025493891).

13331420401 is a wasteful number, since it uses less digits than its factorization.

13331420401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025493890.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13331420401 its reverse (10402413331), we get a palindrome (23733833732).

The spelling of 13331420401 in words is "thirteen billion, three hundred thirty-one million, four hundred twenty thousand, four hundred one".