13321903 has 8 divisors (see below), whose sum is σ = 15253920. Its totient is φ = 11397120.

The previous prime is 13321879. The next prime is 13321927. The reversal of 13321903 is 30912331.

It is an interprime number because it is at equal distance from previous prime (13321879) and next prime (13321927).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13321903 - 2¹⁷ = 13190831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3003 + ... + 5971.

It is an arithmetic number, because the mean of its divisors is an integer number (1906740).

Almost surely, 2^13321903 is an apocalyptic number.

13321903 is a deficient number, since it is larger than the sum of its proper divisors (1932017).

13321903 is an equidigital number, since it uses as much as digits as its factorization.

13321903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 13321903 is about 3649.9182182619. The cubic root of 13321903 is about 237.0584401334.

The spelling of 13321903 in words is "thirteen million, three hundred twenty-one thousand, nine hundred three".