13381903 has 2 divisors, whose sum is σ = 13381904. Its totient is φ = 13381902.

The previous prime is 13381891. The next prime is 13381913. The reversal of 13381903 is 30918331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13381903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13381913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6690951 + 6690952.

It is an arithmetic number, because the mean of its divisors is an integer number (6690952).

Almost surely, 2^13381903 is an apocalyptic number.

13381903 is a deficient number, since it is larger than the sum of its proper divisors (1).

13381903 is an equidigital number, since it uses as much as digits as its factorization.

13381903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 13381903 is about 3658.1283465729. The cubic root of 13381903 is about 237.4137999273.

The spelling of 13381903 in words is "thirteen million, three hundred eighty-one thousand, nine hundred three".