213423297 has 4 divisors (see below), whose sum is σ = 284564400. Its totient is φ = 142282196.

The previous prime is 213423277. The next prime is 213423307. The reversal of 213423297 is 792324312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213423297 - 2¹⁰ = 213422273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213423247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35570547 + ... + 35570552.

It is an arithmetic number, because the mean of its divisors is an integer number (71141100).

Almost surely, 2^213423297 is an apocalyptic number.

It is an amenable number.

213423297 is a deficient number, since it is larger than the sum of its proper divisors (71141103).

213423297 is an equidigital number, since it uses as much as digits as its factorization.

213423297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71141102.

The product of its digits is 18144, while the sum is 33.

The square root of 213423297 is about 14609.0142377917. The cubic root of 213423297 is about 597.6046134876.

The spelling of 213423297 in words is "two hundred thirteen million, four hundred twenty-three thousand, two hundred ninety-seven".