212408513 has 2 divisors, whose sum is σ = 212408514. Its totient is φ = 212408512.

The previous prime is 212408503. The next prime is 212408549. The reversal of 212408513 is 315804212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111365809 + 101042704 = 10553^2 + 10052^2 .

It is a cyclic number.

It is not a de Polignac number, because 212408513 - 2⁸ = 212408257 is a prime.

It is not a weakly prime, because it can be changed into another prime (212408503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106204256 + 106204257.

It is an arithmetic number, because the mean of its divisors is an integer number (106204257).

Almost surely, 2^212408513 is an apocalyptic number.

It is an amenable number.

212408513 is a deficient number, since it is larger than the sum of its proper divisors (1).

212408513 is an equidigital number, since it uses as much as digits as its factorization.

212408513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 212408513 is about 14574.2414210826. The cubic root of 212408513 is about 596.6559458695.

The spelling of 212408513 in words is "two hundred twelve million, four hundred eight thousand, five hundred thirteen".