212293 has 2 divisors, whose sum is σ = 212294. Its totient is φ = 212292.
The previous prime is 212281. The next prime is 212297. The reversal of 212293 is 392212.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 191844 + 20449 = 438^2 + 143^2 .
It is a cyclic number.
It is not a de Polignac number, because 212293 - 29 = 211781 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 212293.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (212297) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106146 + 106147.
It is an arithmetic number, because the mean of its divisors is an integer number (106147).
2212293 is an apocalyptic number.
It is an amenable number.
212293 is a deficient number, since it is larger than the sum of its proper divisors (1).
212293 is an equidigital number, since it uses as much as digits as its factorization.
212293 is an evil number, because the sum of its binary digits is even.
The product of its digits is 216, while the sum is 19.
The square root of 212293 is about 460.7526451362. The cubic root of 212293 is about 59.6547767506.
It can be divided in two parts, 212 and 293, that added together give a palindrome (505).
The spelling of 212293 in words is "two hundred twelve thousand, two hundred ninety-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •