212315707 has 2 divisors, whose sum is σ = 212315708. Its totient is φ = 212315706.

The previous prime is 212315611. The next prime is 212315717. The reversal of 212315707 is 707513212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212315707 - 2²⁷ = 78097979 is a prime.

It is not a weakly prime, because it can be changed into another prime (212315717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106157853 + 106157854.

It is an arithmetic number, because the mean of its divisors is an integer number (106157854).

Almost surely, 2^212315707 is an apocalyptic number.

212315707 is a deficient number, since it is larger than the sum of its proper divisors (1).

212315707 is an equidigital number, since it uses as much as digits as its factorization.

212315707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 212315707 is about 14571.0571682359. The cubic root of 212315707 is about 596.5690357963.

Adding to 212315707 its reverse (707513212), we get a palindrome (919828919).

The spelling of 212315707 in words is "two hundred twelve million, three hundred fifteen thousand, seven hundred seven".