312203211020 has 24 divisors (see below), whose sum is σ = 663925819200. Its totient is φ = 123300508032.

The previous prime is 312203211011. The next prime is 312203211029. The reversal of 312203211020 is 20112302213.

It is an interprime number because it is at equal distance from previous prime (312203211011) and next prime (312203211029).

It is a self number, because there is not a number n which added to its sum of digits gives 312203211020.

It is not an unprimeable number, because it can be changed into a prime (312203211029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98796905 + ... + 98800064.

It is an arithmetic number, because the mean of its divisors is an integer number (27663575800).

Almost surely, 2^312203211020 is an apocalyptic number.

It is an amenable number.

312203211020 is an abundant number, since it is smaller than the sum of its proper divisors (351722608180).

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

312203211020 is a wasteful number, since it uses less digits than its factorization.

312203211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197597057 (or 197597055 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 312203211020 its reverse (20112302213), we get a palindrome (332315513233).

The spelling of 312203211020 in words is "three hundred twelve billion, two hundred three million, two hundred eleven thousand, twenty".