213111332312 has 8 divisors (see below), whose sum is σ = 399583748100. Its totient is φ = 106555666152.

The previous prime is 213111332311. The next prime is 213111332321. The reversal of 213111332312 is 213233111312.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111332311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13319458262 + ... + 13319458277.

Almost surely, 2^213111332312 is an apocalyptic number.

It is an amenable number.

213111332312 is a deficient number, since it is larger than the sum of its proper divisors (186472415788).

213111332312 is a wasteful number, since it uses less digits than its factorization.

213111332312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26638916545 (or 26638916541 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 213111332312 its reverse (213233111312), we get a palindrome (426344443624).

The spelling of 213111332312 in words is "two hundred thirteen billion, one hundred eleven million, three hundred thirty-two thousand, three hundred twelve".