201123430 has 16 divisors (see below), whose sum is σ = 383317920. Its totient is φ = 75716992.

The previous prime is 201123401. The next prime is 201123449. The reversal of 201123430 is 34321102.

It is a happy number.

It is a congruent number.

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, 591370 + ... + 591709.

It is an arithmetic number, because the mean of its divisors is an integer number (23957370).

Almost surely, 2^201123430 is an apocalyptic number.

201123430 is a deficient number, since it is larger than the sum of its proper divisors (182194490).

201123430 is a wasteful number, since it uses less digits than its factorization.

201123430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183103.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 201123430 is about 14181.7992511529. The cubic root of 201123430 is about 585.8964802170.

Adding to 201123430 its reverse (34321102), we get a palindrome (235444532).

The spelling of 201123430 in words is "two hundred one million, one hundred twenty-three thousand, four hundred thirty".