201423234 has 16 divisors (see below), whose sum is σ = 403223040. Its totient is φ = 67078320.

The previous prime is 201423197. The next prime is 201423251. The reversal of 201423234 is 432324102.

It is a self number, because there is not a number n which added to its sum of digits gives 201423234.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8482 + ... + 21789.

It is an arithmetic number, because the mean of its divisors is an integer number (25201440).

Almost surely, 2^201423234 is an apocalyptic number.

201423234 is an abundant number, since it is smaller than the sum of its proper divisors (201799806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201423234 is a wasteful number, since it uses less digits than its factorization.

201423234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31385.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 201423234 is about 14192.3653419717. The cubic root of 201423234 is about 586.1874572572.

Adding to 201423234 its reverse (432324102), we get a palindrome (633747336).

The spelling of 201423234 in words is "two hundred one million, four hundred twenty-three thousand, two hundred thirty-four".