213431314212 has 54 divisors (see below), whose sum is σ = 543105577014. Its totient is φ = 70672348800.

The previous prime is 213431314199. The next prime is 213431314223. The reversal of 213431314212 is 212413134312.

213431314212 is a `hidden beast` number, since 2 + 1 + 3 + 431 + 3 + 14 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 159637006116 + 53794308096 = 399546^2 + 231936^2 .

It is a super-2 number, since 2×213431314212² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 690828 + ... + 950844.

Almost surely, 2^213431314212 is an apocalyptic number.

It is an amenable number.

213431314212 is an abundant number, since it is smaller than the sum of its proper divisors (329674262802).

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

213431314212 is a wasteful number, since it uses less digits than its factorization.

213431314212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260329 (or 260173 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 213431314212 its reverse (212413134312), we get a palindrome (425844448524).

The spelling of 213431314212 in words is "two hundred thirteen billion, four hundred thirty-one million, three hundred fourteen thousand, two hundred twelve".