212315613 has 16 divisors (see below), whose sum is σ = 287150400. Its totient is φ = 139527296.

The previous prime is 212315611. The next prime is 212315707. The reversal of 212315613 is 316513212.

It is a cyclic number.

It is not a de Polignac number, because 212315613 - 2¹ = 212315611 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212315611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59506 + ... + 62972.

It is an arithmetic number, because the mean of its divisors is an integer number (17946900).

Almost surely, 2^212315613 is an apocalyptic number.

It is an amenable number.

212315613 is a deficient number, since it is larger than the sum of its proper divisors (74834787).

212315613 is a wasteful number, since it uses less digits than its factorization.

212315613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756.

The product of its digits is 1080, while the sum is 24.

The square root of 212315613 is about 14571.0539426632. The cubic root of 212315613 is about 596.5689477552.

Adding to 212315613 its reverse (316513212), we get a palindrome (528828825).

The spelling of 212315613 in words is "two hundred twelve million, three hundred fifteen thousand, six hundred thirteen".