211404323344 has 20 divisors (see below), whose sum is σ = 433689752124. Its totient is φ = 99484387328.

The previous prime is 211404323341. The next prime is 211404323399. The reversal of 211404323344 is 443323404112.

It can be written as a sum of positive squares in 2 ways, for example, as 156372793600 + 55031529744 = 395440^2 + 234588^2 .

It is not an unprimeable number, because it can be changed into a prime (211404323341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388610617 + ... + 388611160.

Almost surely, 2^211404323344 is an apocalyptic number.

It is an amenable number.

211404323344 is an abundant number, since it is smaller than the sum of its proper divisors (222285428780).

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

211404323344 is a wasteful number, since it uses less digits than its factorization.

211404323344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777221802 (or 777221796 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 211404323344 its reverse (443323404112), we get a palindrome (654727727456).

The spelling of 211404323344 in words is "two hundred eleven billion, four hundred four million, three hundred twenty-three thousand, three hundred forty-four".