212351287 has 2 divisors, whose sum is σ = 212351288. Its totient is φ = 212351286.

The previous prime is 212351281. The next prime is 212351291. The reversal of 212351287 is 782153212.

212351287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212351287 - 2¹¹ = 212349239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212351281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106175643 + 106175644.

It is an arithmetic number, because the mean of its divisors is an integer number (106175644).

Almost surely, 2^212351287 is an apocalyptic number.

212351287 is a deficient number, since it is larger than the sum of its proper divisors (1).

212351287 is an equidigital number, since it uses as much as digits as its factorization.

212351287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 212351287 is about 14572.2780305620. The cubic root of 212351287 is about 596.6023584066.

It can be divided in two parts, 21235 and 1287, that added together give a palindrome (22522).

The spelling of 212351287 in words is "two hundred twelve million, three hundred fifty-one thousand, two hundred eighty-seven".