212263173 has 24 divisors (see below), whose sum is σ = 336667968. Its totient is φ = 133182144.

The previous prime is 212263171. The next prime is 212263199. The reversal of 212263173 is 371362212.

212263173 is a `hidden beast` number, since 2 + 1 + 22 + 631 + 7 + 3 = 666.

It is not a de Polignac number, because 212263173 - 2¹ = 212263171 is a prime.

It is a super-2 number, since 2×212263173² = 90111309224055858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212263171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21561 + ... + 29822.

It is an arithmetic number, because the mean of its divisors is an integer number (14027832).

Almost surely, 2^212263173 is an apocalyptic number.

It is an amenable number.

212263173 is a deficient number, since it is larger than the sum of its proper divisors (124404795).

212263173 is an equidigital number, since it uses as much as digits as its factorization.

212263173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51415 (or 51403 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 212263173 is about 14569.2543735086. The cubic root of 212263173 is about 596.5198280333.

The spelling of 212263173 in words is "two hundred twelve million, two hundred sixty-three thousand, one hundred seventy-three".