213423567 has 24 divisors (see below), whose sum is σ = 336465072. Its totient is φ = 119952000.

The previous prime is 213423541. The next prime is 213423583. The reversal of 213423567 is 765324312.

It is not a de Polignac number, because 213423567 - 2¹⁸ = 213161423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213423167) 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, 2934 + ... + 20867.

It is an arithmetic number, because the mean of its divisors is an integer number (14019378).

Almost surely, 2^213423567 is an apocalyptic number.

213423567 is a deficient number, since it is larger than the sum of its proper divisors (123041505).

213423567 is a wasteful number, since it uses less digits than its factorization.

213423567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23879 (or 23872 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 213423567 is about 14609.0234786587. The cubic root of 213423567 is about 597.6048654957.

Adding to 213423567 its reverse (765324312), we get a palindrome (978747879).

The spelling of 213423567 in words is "two hundred thirteen million, four hundred twenty-three thousand, five hundred sixty-seven".