312120213210 has 96 divisors (see below), whose sum is σ = 874048855680. Its totient is φ = 76819722624.

The previous prime is 312120213151. The next prime is 312120213263. The reversal of 312120213210 is 12312021213.

312120213210 is a `hidden beast` number, since 31 + 212 + 0 + 213 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13980877 + ... + 14003183.

It is an arithmetic number, because the mean of its divisors is an integer number (9104675580).

Almost surely, 2^312120213210 is an apocalyptic number.

312120213210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312120213210 is an abundant number, since it is smaller than the sum of its proper divisors (561928642470).

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

312120213210 is a wasteful number, since it uses less digits than its factorization.

312120213210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34292 (or 34289 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 312120213210 its reverse (12312021213), we get a palindrome (324432234423).

The spelling of 312120213210 in words is "three hundred twelve billion, one hundred twenty million, two hundred thirteen thousand, two hundred ten".