212283653 has 2 divisors, whose sum is σ = 212283654. Its totient is φ = 212283652.

The previous prime is 212283623. The next prime is 212283661. The reversal of 212283653 is 356382212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211033729 + 1249924 = 14527^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 212283653 - 2²⁶ = 145174789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212283623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106141826 + 106141827.

It is an arithmetic number, because the mean of its divisors is an integer number (106141827).

Almost surely, 2^212283653 is an apocalyptic number.

It is an amenable number.

212283653 is a deficient number, since it is larger than the sum of its proper divisors (1).

212283653 is an equidigital number, since it uses as much as digits as its factorization.

212283653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 212283653 is about 14569.9572065260. The cubic root of 212283653 is about 596.5390122894.

The spelling of 212283653 in words is "two hundred twelve million, two hundred eighty-three thousand, six hundred fifty-three".