201323430 has 288 divisors, whose sum is σ = 697132800. Its totient is φ = 39346560.

The previous prime is 201323383. The next prime is 201323453. The reversal of 201323430 is 34323102.

201323430 = T₂₀ + T₂₁ + ... + T₁₀₆₄.

201323430 is a `hidden beast` number, since 201 + 32 + 3 + 430 = 666.

It is a super-2 number, since 2×201323430² = 81062246933929800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1448301 + ... + 1448439.

It is an arithmetic number, because the mean of its divisors is an integer number (2420600).

Almost surely, 2^201323430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201323430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348566400).

201323430 is an abundant number, since it is smaller than the sum of its proper divisors (495809370).

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

201323430 is a wasteful number, since it uses less digits than its factorization.

201323430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 201323430 is about 14188.8487905115. The cubic root of 201323430 is about 586.0906238098.

Adding to 201323430 its reverse (34323102), we get a palindrome (235646532).

The spelling of 201323430 in words is "two hundred one million, three hundred twenty-three thousand, four hundred thirty".