201442143131 has 4 divisors (see below), whose sum is σ = 201444201000. Its totient is φ = 201440085264.

The previous prime is 201442143107. The next prime is 201442143137. The reversal of 201442143131 is 131341244102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201442143131 is a prime.

It is a super-2 number, since 2×201442143131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201442143131.

It is not an unprimeable number, because it can be changed into a prime (201442143137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874361 + ... + 1080458.

It is an arithmetic number, because the mean of its divisors is an integer number (50361050250).

Almost surely, 2^201442143131 is an apocalyptic number.

201442143131 is a deficient number, since it is larger than the sum of its proper divisors (2057869).

201442143131 is a wasteful number, since it uses less digits than its factorization.

201442143131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057868.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 201442143131 its reverse (131341244102), we get a palindrome (332783387233).

The spelling of 201442143131 in words is "two hundred one billion, four hundred forty-two million, one hundred forty-three thousand, one hundred thirty-one".