201131342 has 4 divisors (see below), whose sum is σ = 301697016. Its totient is φ = 100565670.

The previous prime is 201131341. The next prime is 201131347. The reversal of 201131342 is 243131102.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 201131342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201131341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50282834 + ... + 50282837.

It is an arithmetic number, because the mean of its divisors is an integer number (75424254).

Almost surely, 2^201131342 is an apocalyptic number.

201131342 is a deficient number, since it is larger than the sum of its proper divisors (100565674).

201131342 is a wasteful number, since it uses less digits than its factorization.

201131342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100565673.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 201131342 is about 14182.0781974998. The cubic root of 201131342 is about 585.9041629820.

Adding to 201131342 its reverse (243131102), we get a palindrome (444262444).

The spelling of 201131342 in words is "two hundred one million, one hundred thirty-one thousand, three hundred forty-two".