19214231 has 2 divisors, whose sum is σ = 19214232. Its totient is φ = 19214230.

The previous prime is 19214213. The next prime is 19214243. The reversal of 19214231 is 13241291.

Together with previous prime (19214213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19214231 is a prime.

It is a super-2 number, since 2×19214231² = 738373345842722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19214197 and 19214206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19214201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9607115 + 9607116.

It is an arithmetic number, because the mean of its divisors is an integer number (9607116).

Almost surely, 2^19214231 is an apocalyptic number.

19214231 is a deficient number, since it is larger than the sum of its proper divisors (1).

19214231 is an equidigital number, since it uses as much as digits as its factorization.

19214231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 19214231 is about 4383.4040425222. The cubic root of 19214231 is about 267.8393213354.

The spelling of 19214231 in words is "nineteen million, two hundred fourteen thousand, two hundred thirty-one".