201430231 has 2 divisors, whose sum is σ = 201430232. Its totient is φ = 201430230.

The previous prime is 201430213. The next prime is 201430249. The reversal of 201430231 is 132034102.

It is a happy number.

Together with previous prime (201430213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (201430213) and next prime (201430249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201430231 is a prime.

It is a super-2 number, since 2×201430231² = 81148275921426722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201430531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100715115 + 100715116.

It is an arithmetic number, because the mean of its divisors is an integer number (100715116).

Almost surely, 2^201430231 is an apocalyptic number.

201430231 is a deficient number, since it is larger than the sum of its proper divisors (1).

201430231 is an equidigital number, since it uses as much as digits as its factorization.

201430231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 201430231 is about 14192.6118456047. The cubic root of 201430231 is about 586.1942447995.

Adding to 201430231 its reverse (132034102), we get a palindrome (333464333).

The spelling of 201430231 in words is "two hundred one million, four hundred thirty thousand, two hundred thirty-one".