211442405304 has 32 divisors (see below), whose sum is σ = 569268015120. Its totient is φ = 65059201536.

The previous prime is 211442405269. The next prime is 211442405323. The reversal of 211442405304 is 403504244112.

It is a congruent number.

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, 338849697 + ... + 338850320.

Almost surely, 2^211442405304 is an apocalyptic number.

211442405304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211442405304 is an abundant number, since it is smaller than the sum of its proper divisors (357825609816).

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

211442405304 is a wasteful number, since it uses less digits than its factorization.

211442405304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677700039 (or 677700035 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 211442405304 its reverse (403504244112), we get a palindrome (614946649416).

The spelling of 211442405304 in words is "two hundred eleven billion, four hundred forty-two million, four hundred five thousand, three hundred four".