212023433 has 4 divisors (see below), whose sum is σ = 212631300. Its totient is φ = 211415568.

The previous prime is 212023429. The next prime is 212023447. The reversal of 212023433 is 334320212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192987664 + 19035769 = 13892^2 + 4363^2 .

It is a cyclic number.

It is not a de Polignac number, because 212023433 - 2² = 212023429 is a prime.

It is a super-2 number, since 2×212023433² = 89907872282210978, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212023733) 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, 303410 + ... + 304107.

It is an arithmetic number, because the mean of its divisors is an integer number (53157825).

Almost surely, 2^212023433 is an apocalyptic number.

It is an amenable number.

212023433 is a deficient number, since it is larger than the sum of its proper divisors (607867).

212023433 is an equidigital number, since it uses as much as digits as its factorization.

212023433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607866.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 212023433 is about 14561.0244488497. The cubic root of 212023433 is about 596.2951642571.

Adding to 212023433 its reverse (334320212), we get a palindrome (546343645).

The spelling of 212023433 in words is "two hundred twelve million, twenty-three thousand, four hundred thirty-three".