212323198 has 4 divisors (see below), whose sum is σ = 318484800. Its totient is φ = 106161598.

The previous prime is 212323193. The next prime is 212323211. The reversal of 212323198 is 891323212.

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

It is a super-2 number, since 2×212323198² = 90162280817894408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53080798 + ... + 53080801.

It is an arithmetic number, because the mean of its divisors is an integer number (79621200).

Almost surely, 2^212323198 is an apocalyptic number.

212323198 is a deficient number, since it is larger than the sum of its proper divisors (106161602).

212323198 is a wasteful number, since it uses less digits than its factorization.

212323198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106161601.

The product of its digits is 5184, while the sum is 31.

The square root of 212323198 is about 14571.3142166381. The cubic root of 212323198 is about 596.5760518357.

It can be divided in two parts, 212323 and 198, that added together give a square (212521 = 461²).

The spelling of 212323198 in words is "two hundred twelve million, three hundred twenty-three thousand, one hundred ninety-eight".