213131144002443 has 16 divisors (see below), whose sum is σ = 284214826425600. Its totient is φ = 142067446757600.

The previous prime is 213131144002391. The next prime is 213131144002463. The reversal of 213131144002443 is 344200441131312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 213131144002443 - 2¹⁸ = 213131143740299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213131144002463) 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, 730503493 + ... + 730795193.

It is an arithmetic number, because the mean of its divisors is an integer number (17763426651600).

Almost surely, 2^{213131144002443} is an apocalyptic number.

213131144002443 is a deficient number, since it is larger than the sum of its proper divisors (71083682423157).

213131144002443 is a wasteful number, since it uses less digits than its factorization.

213131144002443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325122.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 213131144002443 its reverse (344200441131312), we get a palindrome (557331585133755).

The spelling of 213131144002443 in words is "two hundred thirteen trillion, one hundred thirty-one billion, one hundred forty-four million, two thousand, four hundred forty-three".