273440231 has 2 divisors, whose sum is σ = 273440232. Its totient is φ = 273440230.

The previous prime is 273440227. The next prime is 273440269. The reversal of 273440231 is 132044372.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 273440231 - 2² = 273440227 is a prime.

It is a super-2 number, since 2×273440231² = 149539119858666722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 273440231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273440201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136720115 + 136720116.

It is an arithmetic number, because the mean of its divisors is an integer number (136720116).

Almost surely, 2^273440231 is an apocalyptic number.

273440231 is a deficient number, since it is larger than the sum of its proper divisors (1).

273440231 is an equidigital number, since it uses as much as digits as its factorization.

273440231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 273440231 is about 16536.0282716256. The cubic root of 273440231 is about 649.0639235930.

The spelling of 273440231 in words is "two hundred seventy-three million, four hundred forty thousand, two hundred thirty-one".