213432123323 has 2 divisors, whose sum is σ = 213432123324. Its totient is φ = 213432123322.

The previous prime is 213432123299. The next prime is 213432123383. The reversal of 213432123323 is 323321234312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213432123323 is a prime.

It is not a weakly prime, because it can be changed into another prime (213432123383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106716061661 + 106716061662.

It is an arithmetic number, because the mean of its divisors is an integer number (106716061662).

Almost surely, 2^213432123323 is an apocalyptic number.

213432123323 is a deficient number, since it is larger than the sum of its proper divisors (1).

213432123323 is an equidigital number, since it uses as much as digits as its factorization.

213432123323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 29.

Adding to 213432123323 its reverse (323321234312), we get a palindrome (536753357635).

The spelling of 213432123323 in words is "two hundred thirteen billion, four hundred thirty-two million, one hundred twenty-three thousand, three hundred twenty-three".