211312204432 has 60 divisors (see below), whose sum is σ = 477783208236. Its totient is φ = 90272931840.

The previous prime is 211312204429. The next prime is 211312204451. The reversal of 211312204432 is 234402213112.

It can be written as a sum of positive squares in 2 ways, for example, as 40789457296 + 170522747136 = 201964^2 + 412944^2 .

It is a super-2 number, since 2×211312204432² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211312204397 and 211312204406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185169 + ... + 675952.

Almost surely, 2^211312204432 is an apocalyptic number.

It is an amenable number.

211312204432 is an abundant number, since it is smaller than the sum of its proper divisors (266471003804).

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

211312204432 is a wasteful number, since it uses less digits than its factorization.

211312204432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861456 (or 861443 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211312204432 its reverse (234402213112), we get a palindrome (445714417544).

The spelling of 211312204432 in words is "two hundred eleven billion, three hundred twelve million, two hundred four thousand, four hundred thirty-two".