312030020220 has 96 divisors (see below), whose sum is σ = 875951193600. Its totient is φ = 82992309504.

The previous prime is 312030020209. The next prime is 312030020231. The reversal of 312030020220 is 22020030213.

It is an interprime number because it is at equal distance from previous prime (312030020209) and next prime (312030020231).

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 312030020220.

It is a congruent number.

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, 88167211 + ... + 88170749.

It is an arithmetic number, because the mean of its divisors is an integer number (9124491600).

Almost surely, 2^312030020220 is an apocalyptic number.

312030020220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312030020220 is an abundant number, since it is smaller than the sum of its proper divisors (563921173380).

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

312030020220 is a wasteful number, since it uses less digits than its factorization.

312030020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6947 (or 6945 counting only the distinct ones).

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

Adding to 312030020220 its reverse (22020030213), we get a palindrome (334050050433).

The spelling of 312030020220 in words is "three hundred twelve billion, thirty million, twenty thousand, two hundred twenty".