201244231 has 2 divisors, whose sum is σ = 201244232. Its totient is φ = 201244230.

The previous prime is 201244229. The next prime is 201244237. The reversal of 201244231 is 132442102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201244231 - 2¹ = 201244229 is a prime.

It is a super-2 number, since 2×201244231² = 80998481021562722, which contains 22 as substring.

Together with 201244229, it forms a pair of twin primes.

It is equal to p_11144053 and since 201244231 and 11144053 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 201244199 and 201244208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201244237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100622115 + 100622116.

It is an arithmetic number, because the mean of its divisors is an integer number (100622116).

Almost surely, 2^201244231 is an apocalyptic number.

201244231 is a deficient number, since it is larger than the sum of its proper divisors (1).

201244231 is an equidigital number, since it uses as much as digits as its factorization.

201244231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 201244231 is about 14186.0576271211. The cubic root of 201244231 is about 586.0137593014.

Adding to 201244231 its reverse (132442102), we get a palindrome (333686333).

The spelling of 201244231 in words is "two hundred one million, two hundred forty-four thousand, two hundred thirty-one".