201323442 has 32 divisors (see below), whose sum is σ = 409248000. Its totient is φ = 66014208.

The previous prime is 201323383. The next prime is 201323453. The reversal of 201323442 is 244323102.

It is a super-2 number, since 2×201323442² = 81062256597454728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164818 + ... + 166034.

It is an arithmetic number, because the mean of its divisors is an integer number (12789000).

Almost surely, 2^201323442 is an apocalyptic number.

201323442 is an abundant number, since it is smaller than the sum of its proper divisors (207924558).

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

201323442 is a wasteful number, since it uses less digits than its factorization.

201323442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650.

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

The square root of 201323442 is about 14188.8492133788. The cubic root of 201323442 is about 586.0906354546.

Adding to 201323442 its reverse (244323102), we get a palindrome (445646544).

The spelling of 201323442 in words is "two hundred one million, three hundred twenty-three thousand, four hundred forty-two".