227819231 has 2 divisors, whose sum is σ = 227819232. Its totient is φ = 227819230.

The previous prime is 227819213. The next prime is 227819239. The reversal of 227819231 is 132918722.

Together with previous prime (227819213) 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-227819231 is a prime.

It is a super-2 number, since 2×227819231² = 103803204026862722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 227819191 and 227819200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227819239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113909615 + 113909616.

It is an arithmetic number, because the mean of its divisors is an integer number (113909616).

Almost surely, 2^227819231 is an apocalyptic number.

227819231 is a deficient number, since it is larger than the sum of its proper divisors (1).

227819231 is an equidigital number, since it uses as much as digits as its factorization.

227819231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 227819231 is about 15093.6818238626. The cubic root of 227819231 is about 610.7499787347.

The spelling of 227819231 in words is "two hundred twenty-seven million, eight hundred nineteen thousand, two hundred thirty-one".