212310457 has 2 divisors, whose sum is σ = 212310458. Its totient is φ = 212310456.

The previous prime is 212310451. The next prime is 212310509. The reversal of 212310457 is 754013212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190743721 + 21566736 = 13811^2 + 4644^2 .

It is a cyclic number.

It is not a de Polignac number, because 212310457 - 2²³ = 203921849 is a prime.

It is not a weakly prime, because it can be changed into another prime (212310451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155228 + 106155229.

It is an arithmetic number, because the mean of its divisors is an integer number (106155229).

Almost surely, 2^212310457 is an apocalyptic number.

It is an amenable number.

212310457 is a deficient number, since it is larger than the sum of its proper divisors (1).

212310457 is an equidigital number, since it uses as much as digits as its factorization.

212310457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 212310457 is about 14570.8770154716. The cubic root of 212310457 is about 596.5641185698.

Adding to 212310457 its reverse (754013212), we get a palindrome (966323669).

The spelling of 212310457 in words is "two hundred twelve million, three hundred ten thousand, four hundred fifty-seven".