19795231 has 2 divisors, whose sum is σ = 19795232. Its totient is φ = 19795230.

The previous prime is 19795229. The next prime is 19795241. The reversal of 19795231 is 13259791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19795231 - 2¹ = 19795229 is a prime.

It is a super-2 number, since 2×19795231² = 783702340686722, which contains 22 as substring.

Together with 19795229, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19795241) 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 as a sum of consecutive naturals, namely, 9897615 + 9897616.

It is an arithmetic number, because the mean of its divisors is an integer number (9897616).

Almost surely, 2^19795231 is an apocalyptic number.

19795231 is a deficient number, since it is larger than the sum of its proper divisors (1).

19795231 is an equidigital number, since it uses as much as digits as its factorization.

19795231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 19795231 is about 4449.1831834619. The cubic root of 19795231 is about 270.5122010161.

The spelling of 19795231 in words is "nineteen million, seven hundred ninety-five thousand, two hundred thirty-one".