13310921 has 8 divisors (see below), whose sum is σ = 14416584. Its totient is φ = 12216960.

The previous prime is 13310909. The next prime is 13310939. The reversal of 13310921 is 12901331.

It can be written as a sum of positive squares in 4 ways, for example, as 1784896 + 11526025 = 1336^2 + 3395^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13310921 - 2¹⁰ = 13309897 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13310893 and 13310902.

It is not an unprimeable number, because it can be changed into a prime (13310221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (1802073).

Almost surely, 2^13310921 is an apocalyptic number.

It is an amenable number.

13310921 is a deficient number, since it is larger than the sum of its proper divisors (1105663).

13310921 is a wasteful number, since it uses less digits than its factorization.

13310921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5851.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 13310921 is about 3648.4134908204. The cubic root of 13310921 is about 236.9932819878.

The spelling of 13310921 in words is "thirteen million, three hundred ten thousand, nine hundred twenty-one".