212263123 has 4 divisors (see below), whose sum is σ = 212689000. Its totient is φ = 211837248.

The previous prime is 212263111. The next prime is 212263153. The reversal of 212263123 is 321362212.

212263123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212263123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212263094 and 212263103.

It is not an unprimeable number, because it can be changed into a prime (212263153) 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, 212190 + ... + 213187.

It is an arithmetic number, because the mean of its divisors is an integer number (53172250).

Almost surely, 2^212263123 is an apocalyptic number.

212263123 is a deficient number, since it is larger than the sum of its proper divisors (425877).

212263123 is an equidigital number, since it uses as much as digits as its factorization.

212263123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425876.

The product of its digits is 864, while the sum is 22.

The square root of 212263123 is about 14569.2526575662. The cubic root of 212263123 is about 596.5197811952.

The spelling of 212263123 in words is "two hundred twelve million, two hundred sixty-three thousand, one hundred twenty-three".