201331423 has 8 divisors (see below), whose sum is σ = 205002000. Its totient is φ = 197669568.

The previous prime is 201331399. The next prime is 201331433. The reversal of 201331423 is 324133102.

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-201331423 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 201331423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201331433) 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, 60265 + ... + 63517.

It is an arithmetic number, because the mean of its divisors is an integer number (25625250).

Almost surely, 2^201331423 is an apocalyptic number.

201331423 is a deficient number, since it is larger than the sum of its proper divisors (3670577).

201331423 is a wasteful number, since it uses less digits than its factorization.

201331423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361.

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

The square root of 201331423 is about 14189.1304525683. The cubic root of 201331423 is about 586.0983800860.

Adding to 201331423 its reverse (324133102), we get a palindrome (525464525).

The spelling of 201331423 in words is "two hundred one million, three hundred thirty-one thousand, four hundred twenty-three".