19072231 has 2 divisors, whose sum is σ = 19072232. Its totient is φ = 19072230.

The previous prime is 19072213. The next prime is 19072243. The reversal of 19072231 is 13227091.

Together with previous prime (19072213) 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 not a de Polignac number, because 19072231 - 2⁹ = 19071719 is a prime.

It is a super-2 number, since 2×19072231² = 727499990634722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19072196 and 19072205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19072211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9536115 + 9536116.

It is an arithmetic number, because the mean of its divisors is an integer number (9536116).

Almost surely, 2^19072231 is an apocalyptic number.

19072231 is a deficient number, since it is larger than the sum of its proper divisors (1).

19072231 is an equidigital number, since it uses as much as digits as its factorization.

19072231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 19072231 is about 4367.1765478396. The cubic root of 19072231 is about 267.1778799427.

The spelling of 19072231 in words is "nineteen million, seventy-two thousand, two hundred thirty-one".