226403231 has 4 divisors (see below), whose sum is σ = 226433472. Its totient is φ = 226372992.

The previous prime is 226403207. The next prime is 226403291. The reversal of 226403231 is 132304622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226403231 is a prime.

It is a super-2 number, since 2×226403231² = 102516846014478722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 226403197 and 226403206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226403201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5330 + ... + 21936.

It is an arithmetic number, because the mean of its divisors is an integer number (56608368).

Almost surely, 2^226403231 is an apocalyptic number.

226403231 is a deficient number, since it is larger than the sum of its proper divisors (30241).

226403231 is a wasteful number, since it uses less digits than its factorization.

226403231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30240.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 226403231 is about 15046.7016651491. The cubic root of 226403231 is about 609.4819851993.

Adding to 226403231 its reverse (132304622), we get a palindrome (358707853).

The spelling of 226403231 in words is "two hundred twenty-six million, four hundred three thousand, two hundred thirty-one".