312111021300 has 72 divisors (see below), whose sum is σ = 972505943136. Its totient is φ = 76827327360.

The previous prime is 312111021293. The next prime is 312111021329. The reversal of 312111021300 is 3120111213.

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 312111021300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40010334 + ... + 40018133.

It is an arithmetic number, because the mean of its divisors is an integer number (13507026988).

Almost surely, 2^312111021300 is an apocalyptic number.

312111021300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312111021300 is an abundant number, since it is smaller than the sum of its proper divisors (660394921836).

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

312111021300 is a wasteful number, since it uses less digits than its factorization.

312111021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80028497 (or 80028490 counting only the distinct ones).

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

Adding to 312111021300 its reverse (3120111213), we get a palindrome (315231132513).

The spelling of 312111021300 in words is "three hundred twelve billion, one hundred eleven million, twenty-one thousand, three hundred".