212355023 has 8 divisors (see below), whose sum is σ = 219964080. Its totient is φ = 205008888.

The previous prime is 212354971. The next prime is 212355083. The reversal of 212355023 is 320553212.

It is not a de Polignac number, because 212355023 - 2¹⁸ = 212092879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212355023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212355083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20036 + ... + 28742.

It is an arithmetic number, because the mean of its divisors is an integer number (27495510).

Almost surely, 2^212355023 is an apocalyptic number.

212355023 is a deficient number, since it is larger than the sum of its proper divisors (7609057).

212355023 is an frugal number, since it uses more digits than its factorization.

212355023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8794 (or 8736 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 212355023 is about 14572.4062186037. The cubic root of 212355023 is about 596.6058571584.

The spelling of 212355023 in words is "two hundred twelve million, three hundred fifty-five thousand, twenty-three".