10891321 has 8 divisors (see below), whose sum is σ = 12467840. Its totient is φ = 9319968.

The previous prime is 10891303. The next prime is 10891333. The reversal of 10891321 is 12319801.

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

It is not a de Polignac number, because 10891321 - 2⁷ = 10891193 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (10891301) 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, 5965 + ... + 7573.

It is an arithmetic number, because the mean of its divisors is an integer number (1558480).

Almost surely, 2^10891321 is an apocalyptic number.

It is an amenable number.

10891321 is a deficient number, since it is larger than the sum of its proper divisors (1576519).

10891321 is an equidigital number, since it uses as much as digits as its factorization.

10891321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 10891321 is about 3300.2001454457. The cubic root of 10891321 is about 221.6631595980.

The spelling of 10891321 in words is "ten million, eight hundred ninety-one thousand, three hundred twenty-one".