14331721 has 2 divisors, whose sum is σ = 14331722. Its totient is φ = 14331720.

The previous prime is 14331701. The next prime is 14331743. The reversal of 14331721 is 12713341.

It is an a-pointer prime, because the next prime (14331743) can be obtained adding 14331721 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14167696 + 164025 = 3764^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 14331721 - 2⁵ = 14331689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14331692 and 14331701.

It is not a weakly prime, because it can be changed into another prime (14331701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7165860 + 7165861.

It is an arithmetic number, because the mean of its divisors is an integer number (7165861).

Almost surely, 2^14331721 is an apocalyptic number.

It is an amenable number.

14331721 is a deficient number, since it is larger than the sum of its proper divisors (1).

14331721 is an equidigital number, since it uses as much as digits as its factorization.

14331721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 14331721 is about 3785.7259541599. The cubic root of 14331721 is about 242.9029457687.

The spelling of 14331721 in words is "fourteen million, three hundred thirty-one thousand, seven hundred twenty-one".