212316535 has 4 divisors (see below), whose sum is σ = 254779848. Its totient is φ = 169853224.

The previous prime is 212316527. The next prime is 212316541. The reversal of 212316535 is 535613212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212316535 - 2³ = 212316527 is a prime.

It is a super-2 number, since 2×212316535² = 90156622068812450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21231649 + ... + 21231658.

It is an arithmetic number, because the mean of its divisors is an integer number (63694962).

Almost surely, 2^212316535 is an apocalyptic number.

212316535 is a deficient number, since it is larger than the sum of its proper divisors (42463313).

212316535 is an equidigital number, since it uses as much as digits as its factorization.

212316535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42463312.

The product of its digits is 5400, while the sum is 28.

The square root of 212316535 is about 14571.0855806971. The cubic root of 212316535 is about 596.5698113057.

Adding to 212316535 its reverse (535613212), we get a palindrome (747929747).

The spelling of 212316535 in words is "two hundred twelve million, three hundred sixteen thousand, five hundred thirty-five".