312002030220 has 96 divisors (see below), whose sum is σ = 902762219520. Its totient is φ = 80429537280.

The previous prime is 312002030167. The next prime is 312002030279. The reversal of 312002030220 is 22030200213.

It is a super-2 number, since 2×312002030220² (a number of 24 digits) contains 22 as substring.

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 312002030220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1637659 + ... + 1818221.

It is an arithmetic number, because the mean of its divisors is an integer number (9403773120).

Almost surely, 2^312002030220 is an apocalyptic number.

312002030220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312002030220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451381109760).

312002030220 is an abundant number, since it is smaller than the sum of its proper divisors (590760189300).

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

312002030220 is a wasteful number, since it uses less digits than its factorization.

312002030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181535 (or 181533 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 312002030220 its reverse (22030200213), we get a palindrome (334032230433).

The spelling of 312002030220 in words is "three hundred twelve billion, two million, thirty thousand, two hundred twenty".