14323931381809 has 81 divisors (see below), whose sum is σ = 17487064657881. Its totient is φ = 11698347039120.

The previous prime is 14323931381803. The next prime is 14323931381813. The reversal of 14323931381809 is 90818313932341.

The square root of 14323931381809 is 3784697.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 14323931381809 - 2²⁹ = 14323394510897 is a prime.

It is a super-2 number, since 2×14323931381809² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 14323931381809.

It is not an unprimeable number, because it can be changed into a prime (14323931381803) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 87876879562 + ... + 87876879724.

Almost surely, 2^{14323931381809} is an apocalyptic number.

14323931381809 is the 3784697-th square number.

14323931381809 is the 1892349-th centered octagonal number.

It is an amenable number.

14323931381809 is a deficient number, since it is larger than the sum of its proper divisors (3163133276072).

14323931381809 is an frugal number, since it uses more digits than its factorization.

14323931381809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 14323931381809 in words is "fourteen trillion, three hundred twenty-three billion, nine hundred thirty-one million, three hundred eighty-one thousand, eight hundred nine".