213326678312 has 128 divisors (see below), whose sum is σ = 487073710080. Its totient is φ = 86438784000.

The previous prime is 213326678267. The next prime is 213326678339. The reversal of 213326678312 is 213876623312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2130737 + ... + 2228607.

It is an arithmetic number, because the mean of its divisors is an integer number (3805263360).

Almost surely, 2^213326678312 is an apocalyptic number.

213326678312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213326678312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243536855040).

213326678312 is an abundant number, since it is smaller than the sum of its proper divisors (273747031768).

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

213326678312 is a wasteful number, since it uses less digits than its factorization.

213326678312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97983 (or 97979 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The spelling of 213326678312 in words is "two hundred thirteen billion, three hundred twenty-six million, six hundred seventy-eight thousand, three hundred twelve".