212323511715 has 64 divisors (see below), whose sum is σ = 394075238400. Its totient is φ = 95613686784.

The previous prime is 212323511663. The next prime is 212323511753. The reversal of 212323511715 is 517115323212.

It is a happy number.

It is not a de Polignac number, because 212323511715 - 2⁸ = 212323511459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2471574 + ... + 2556036.

It is an arithmetic number, because the mean of its divisors is an integer number (6157425600).

Almost surely, 2^212323511715 is an apocalyptic number.

212323511715 is a deficient number, since it is larger than the sum of its proper divisors (181751726685).

212323511715 is a wasteful number, since it uses less digits than its factorization.

212323511715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84836.

The product of its digits is 12600, while the sum is 33.

Adding to 212323511715 its reverse (517115323212), we get a palindrome (729438834927).

The spelling of 212323511715 in words is "two hundred twelve billion, three hundred twenty-three million, five hundred eleven thousand, seven hundred fifteen".