312031211100 has 108 divisors (see below), whose sum is σ = 1050207954264. Its totient is φ = 71321416320.

The previous prime is 312031211081. The next prime is 312031211113. The reversal of 312031211100 is 1112130213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 312031211100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10598607 + ... + 10628006.

Almost surely, 2^312031211100 is an apocalyptic number.

312031211100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312031211100 is an abundant number, since it is smaller than the sum of its proper divisors (738176743164).

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

312031211100 is a wasteful number, since it uses less digits than its factorization.

312031211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21226644 (or 21226630 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 312031211100 its reverse (1112130213), we get a palindrome (313143341313).

The spelling of 312031211100 in words is "three hundred twelve billion, thirty-one million, two hundred eleven thousand, one hundred".