201331442 has 32 divisors (see below), whose sum is σ = 345797424. Its totient is φ = 87091200.

The previous prime is 201331441. The next prime is 201331447. The reversal of 201331442 is 244133102.

It can be written as a sum of positive squares in 8 ways, for example, as 136866601 + 64464841 = 11699^2 + 8029^2 .

It is not an unprimeable number, because it can be changed into a prime (201331441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123392 + ... + 125012.

Almost surely, 2^201331442 is an apocalyptic number.

201331442 is a deficient number, since it is larger than the sum of its proper divisors (144465982).

201331442 is a wasteful number, since it uses less digits than its factorization.

201331442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 201331442 is about 14189.1311220948. The cubic root of 201331442 is about 586.0983985230.

Adding to 201331442 its reverse (244133102), we get a palindrome (445464544).

The spelling of 201331442 in words is "two hundred one million, three hundred thirty-one thousand, four hundred forty-two".