213444104523 has 24 divisors (see below), whose sum is σ = 309949263792. Its totient is φ = 130590914688.

The previous prime is 213444104507. The next prime is 213444104597. The reversal of 213444104523 is 325401444312.

It is not a de Polignac number, because 213444104523 - 2⁴ = 213444104507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213444104323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1129036 + ... + 1304457.

It is an arithmetic number, because the mean of its divisors is an integer number (12914552658).

Almost surely, 2^213444104523 is an apocalyptic number.

213444104523 is a deficient number, since it is larger than the sum of its proper divisors (96505159269).

213444104523 is a wasteful number, since it uses less digits than its factorization.

213444104523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433695 (or 2433682 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 213444104523 its reverse (325401444312), we get a palindrome (538845548835).

The spelling of 213444104523 in words is "two hundred thirteen billion, four hundred forty-four million, one hundred four thousand, five hundred twenty-three".