201423133 has 8 divisors (see below), whose sum is σ = 205091000. Its totient is φ = 197779968.

The previous prime is 201423127. The next prime is 201423169. The reversal of 201423133 is 331324102.

It can be written as a sum of positive squares in 4 ways, for example, as 100360324 + 101062809 = 10018^2 + 10053^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201423133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201423133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201423433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10693 + ... + 22741.

It is an arithmetic number, because the mean of its divisors is an integer number (25636375).

Almost surely, 2^201423133 is an apocalyptic number.

It is an amenable number.

201423133 is a deficient number, since it is larger than the sum of its proper divisors (3667867).

201423133 is a wasteful number, since it uses less digits than its factorization.

201423133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12351.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 201423133 is about 14192.3617837201. The cubic root of 201423133 is about 586.1873592795.

Adding to 201423133 its reverse (331324102), we get a palindrome (532747235).

The spelling of 201423133 in words is "two hundred one million, four hundred twenty-three thousand, one hundred thirty-three".