213112320312 has 64 divisors (see below), whose sum is σ = 533910132000. Its totient is φ = 70887020544.

The previous prime is 213112320301. The next prime is 213112320361. The reversal of 213112320312 is 213023211312.

It is a super-2 number, since 2×213112320312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28301764 + ... + 28309292.

Almost surely, 2^213112320312 is an apocalyptic number.

It is an amenable number.

213112320312 is an abundant number, since it is smaller than the sum of its proper divisors (320797811688).

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

213112320312 is a wasteful number, since it uses less digits than its factorization.

213112320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9880 (or 9876 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213112320312 its reverse (213023211312), we get a palindrome (426135531624).

The spelling of 213112320312 in words is "two hundred thirteen billion, one hundred twelve million, three hundred twenty thousand, three hundred twelve".