213242531143 has 4 divisors (see below), whose sum is σ = 214654733488. Its totient is φ = 211830328800.

The previous prime is 213242531129. The next prime is 213242531149. The reversal of 213242531143 is 341135242312.

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

It is a cyclic number.

It is not a de Polignac number, because 213242531143 - 2³⁷ = 75803577671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213242531149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706100946 + ... + 706101247.

It is an arithmetic number, because the mean of its divisors is an integer number (53663683372).

Almost surely, 2^213242531143 is an apocalyptic number.

213242531143 is a deficient number, since it is larger than the sum of its proper divisors (1412202345).

213242531143 is a wasteful number, since it uses less digits than its factorization.

213242531143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412202344.

The product of its digits is 17280, while the sum is 31.

Adding to 213242531143 its reverse (341135242312), we get a palindrome (554377773455).

The spelling of 213242531143 in words is "two hundred thirteen billion, two hundred forty-two million, five hundred thirty-one thousand, one hundred forty-three".