201423256 has 32 divisors (see below), whose sum is σ = 398790000. Its totient is φ = 95112576.

The previous prime is 201423253. The next prime is 201423311. The reversal of 201423256 is 652324102.

It is a self number, because there is not a number n which added to its sum of digits gives 201423256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201423251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51150 + ... + 54946.

Almost surely, 2^201423256 is an apocalyptic number.

It is an amenable number.

201423256 is a deficient number, since it is larger than the sum of its proper divisors (197366744).

201423256 is a wasteful number, since it uses less digits than its factorization.

201423256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171 (or 4167 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 201423256 is about 14192.3661170363. The cubic root of 201423256 is about 586.1874785989.

Adding to 201423256 its reverse (652324102), we get a palindrome (853747358).

The spelling of 201423256 in words is "two hundred one million, four hundred twenty-three thousand, two hundred fifty-six".