213423131227 has 2 divisors, whose sum is σ = 213423131228. Its totient is φ = 213423131226.

The previous prime is 213423131203. The next prime is 213423131261. The reversal of 213423131227 is 722131324312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213423131227 is a prime.

It is not a weakly prime, because it can be changed into another prime (213423137227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106711565613 + 106711565614.

It is an arithmetic number, because the mean of its divisors is an integer number (106711565614).

Almost surely, 2^213423131227 is an apocalyptic number.

213423131227 is a deficient number, since it is larger than the sum of its proper divisors (1).

213423131227 is an equidigital number, since it uses as much as digits as its factorization.

213423131227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

Adding to 213423131227 its reverse (722131324312), we get a palindrome (935554455539).

The spelling of 213423131227 in words is "two hundred thirteen billion, four hundred twenty-three million, one hundred thirty-one thousand, two hundred twenty-seven".