213432023444 has 12 divisors (see below), whose sum is σ = 375109072884. Its totient is φ = 106258002624.

The previous prime is 213432023443. The next prime is 213432023461. The reversal of 213432023444 is 444320234312.

It can be written as a sum of positive squares in 2 ways, for example, as 61534755844 + 151897267600 = 248062^2 + 389740^2 .

It is a super-2 number, since 2×213432023444² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213432023444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213432023443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114501227 + ... + 114503090.

It is an arithmetic number, because the mean of its divisors is an integer number (31259089407).

Almost surely, 2^213432023444 is an apocalyptic number.

It is an amenable number.

213432023444 is a deficient number, since it is larger than the sum of its proper divisors (161677049440).

213432023444 is a wasteful number, since it uses less digits than its factorization.

213432023444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229004554 (or 229004552 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 213432023444 its reverse (444320234312), we get a palindrome (657752257756).

The spelling of 213432023444 in words is "two hundred thirteen billion, four hundred thirty-two million, twenty-three thousand, four hundred forty-four".