212313516 has 12 divisors (see below), whose sum is σ = 495398232. Its totient is φ = 70771168.

The previous prime is 212313487. The next prime is 212313533. The reversal of 212313516 is 615313212.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8846385 + ... + 8846408.

It is an arithmetic number, because the mean of its divisors is an integer number (41283186).

Almost surely, 2^212313516 is an apocalyptic number.

It is an amenable number.

212313516 is an abundant number, since it is smaller than the sum of its proper divisors (283084716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212313516 is a wasteful number, since it uses less digits than its factorization.

212313516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17692800 (or 17692798 counting only the distinct ones).

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

The square root of 212313516 is about 14570.9819847531. The cubic root of 212313516 is about 596.5669836836.

Adding to 212313516 its reverse (615313212), we get a palindrome (827626728).

The spelling of 212313516 in words is "two hundred twelve million, three hundred thirteen thousand, five hundred sixteen".