312211000000 has 98 divisors (see below), whose sum is σ = 774422196644. Its totient is φ = 124884000000.

The previous prime is 312210999977. The next prime is 312211000019. The reversal of 312211000000 is 112213.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 843895 + ... + 1156105.

Almost surely, 2^312211000000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312211000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387211098322).

312211000000 is an abundant number, since it is smaller than the sum of its proper divisors (462211196644).

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

312211000000 is an frugal number, since it uses more digits than its factorization.

312211000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312253 (or 312218 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 312211000000 its reverse (112213), we get a palindrome (312211112213).

The spelling of 312211000000 in words is "three hundred twelve billion, two hundred eleven million", and thus it is an aban number.