212311434 has 16 divisors (see below), whose sum is σ = 446971680. Its totient is φ = 67045680.

The previous prime is 212311417. The next prime is 212311447. The reversal of 212311434 is 434113212.

It is a super-2 number, since 2×212311434² = 90152290014272712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212311434.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931077 + ... + 931304.

It is an arithmetic number, because the mean of its divisors is an integer number (27935730).

Almost surely, 2^212311434 is an apocalyptic number.

212311434 is an abundant number, since it is smaller than the sum of its proper divisors (234660246).

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

212311434 is a wasteful number, since it uses less digits than its factorization.

212311434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862405.

The product of its digits is 576, while the sum is 21.

The square root of 212311434 is about 14570.9105412119. The cubic root of 212311434 is about 596.5650336484.

Adding to 212311434 its reverse (434113212), we get a palindrome (646424646).

The spelling of 212311434 in words is "two hundred twelve million, three hundred eleven thousand, four hundred thirty-four".