312203203312 has 160 divisors (see below), whose sum is σ = 813077959680. Its totient is φ = 112154664960.

The previous prime is 312203203267. The next prime is 312203203343. The reversal of 312203203312 is 213302302213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 14868373 + ... + 14889355.

It is an arithmetic number, because the mean of its divisors is an integer number (5081737248).

Almost surely, 2^312203203312 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 312203203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406538979840).

312203203312 is an abundant number, since it is smaller than the sum of its proper divisors (500874756368).

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

312203203312 is a wasteful number, since it uses less digits than its factorization.

312203203312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21951 (or 21945 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 312203203312 its reverse (213302302213), we get a palindrome (525505505525).

It can be divided in two parts, 312203 and 203312, that added together give a palindrome (515515).

The spelling of 312203203312 in words is "three hundred twelve billion, two hundred three million, two hundred three thousand, three hundred twelve".