212315539 has 2 divisors, whose sum is σ = 212315540. Its totient is φ = 212315538.

The previous prime is 212315531. The next prime is 212315569. The reversal of 212315539 is 935513212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212315539 - 2³ = 212315531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212315539.

It is not a weakly prime, because it can be changed into another prime (212315531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106157769 + 106157770.

It is an arithmetic number, because the mean of its divisors is an integer number (106157770).

Almost surely, 2^212315539 is an apocalyptic number.

212315539 is a deficient number, since it is larger than the sum of its proper divisors (1).

212315539 is an equidigital number, since it uses as much as digits as its factorization.

212315539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 31.

The square root of 212315539 is about 14571.0514033820. The cubic root of 212315539 is about 596.5688784463.

The spelling of 212315539 in words is "two hundred twelve million, three hundred fifteen thousand, five hundred thirty-nine".