211431433434 has 16 divisors (see below), whose sum is σ = 455390779872. Its totient is φ = 65055825648.

The previous prime is 211431433373. The next prime is 211431433457. The reversal of 211431433434 is 434334134112.

211431433434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211431433395 and 211431433404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1355329624 + ... + 1355329779.

It is an arithmetic number, because the mean of its divisors is an integer number (28461923742).

Almost surely, 2^211431433434 is an apocalyptic number.

211431433434 is an abundant number, since it is smaller than the sum of its proper divisors (243959346438).

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

211431433434 is a wasteful number, since it uses less digits than its factorization.

211431433434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710659421.

The product of its digits is 41472, while the sum is 33.

Adding to 211431433434 its reverse (434334134112), we get a palindrome (645765567546).

The spelling of 211431433434 in words is "two hundred eleven billion, four hundred thirty-one million, four hundred thirty-three thousand, four hundred thirty-four".