201311542 has 8 divisors (see below), whose sum is σ = 303500736. Its totient is φ = 100144632.

The previous prime is 201311521. The next prime is 201311549. The reversal of 201311542 is 245113102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201311549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255078 + ... + 255865.

It is an arithmetic number, because the mean of its divisors is an integer number (37937592).

Almost surely, 2^201311542 is an apocalyptic number.

201311542 is a deficient number, since it is larger than the sum of its proper divisors (102189194).

201311542 is a wasteful number, since it uses less digits than its factorization.

201311542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511142.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 201311542 is about 14188.4298638010. The cubic root of 201311542 is about 586.0790875098.

Adding to 201311542 its reverse (245113102), we get a palindrome (446424644).

The spelling of 201311542 in words is "two hundred one million, three hundred eleven thousand, five hundred forty-two".