312043321100 has 36 divisors (see below), whose sum is σ = 773867438064. Its totient is φ = 106986281280.

The previous prime is 312043321039. The next prime is 312043321123. The reversal of 312043321100 is 1123340213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222887387 + ... + 222888786.

It is an arithmetic number, because the mean of its divisors is an integer number (21496317724).

Almost surely, 2^312043321100 is an apocalyptic number.

It is an amenable number.

312043321100 is an abundant number, since it is smaller than the sum of its proper divisors (461824116964).

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

312043321100 is a wasteful number, since it uses less digits than its factorization.

312043321100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445776194 (or 445776187 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312043321100 its reverse (1123340213), we get a palindrome (313166661313).

The spelling of 312043321100 in words is "three hundred twelve billion, forty-three million, three hundred twenty-one thousand, one hundred".