212317190 has 8 divisors (see below), whose sum is σ = 382170960. Its totient is φ = 84926872.

The previous prime is 212317181. The next prime is 212317219. The reversal of 212317190 is 91713212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212317190² = 90157178338992200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10615850 + ... + 10615869.

It is an arithmetic number, because the mean of its divisors is an integer number (47771370).

Almost surely, 2^212317190 is an apocalyptic number.

212317190 is a deficient number, since it is larger than the sum of its proper divisors (169853770).

212317190 is a wasteful number, since it uses less digits than its factorization.

212317190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21231726.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 212317190 is about 14571.1080566991. The cubic root of 212317190 is about 596.5704247810.

The spelling of 212317190 in words is "two hundred twelve million, three hundred seventeen thousand, one hundred ninety".