213243021402433 has 4 divisors (see below), whose sum is σ = 232628750620848. Its totient is φ = 193857292184020.

The previous prime is 213243021402331. The next prime is 213243021402479. The reversal of 213243021402433 is 334204120342312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213243021402433 - 2¹³ = 213243021394241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213243021402133) 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, 9692864609191 + ... + 9692864609212.

It is an arithmetic number, because the mean of its divisors is an integer number (58157187655212).

Almost surely, 2^{213243021402433} is an apocalyptic number.

It is an amenable number.

213243021402433 is a deficient number, since it is larger than the sum of its proper divisors (19385729218415).

213243021402433 is a wasteful number, since it uses less digits than its factorization.

213243021402433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19385729218414.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 213243021402433 its reverse (334204120342312), we get a palindrome (547447141744745).

The spelling of 213243021402433 in words is "two hundred thirteen trillion, two hundred forty-three billion, twenty-one million, four hundred two thousand, four hundred thirty-three".