312444200220 has 24 divisors (see below), whose sum is σ = 874843760784. Its totient is φ = 83318453376.

The previous prime is 312444200197. The next prime is 312444200221. The reversal of 312444200220 is 22002444213.

It is a super-2 number, since 2×312444200220² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312444200221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2603701609 + ... + 2603701728.

It is an arithmetic number, because the mean of its divisors is an integer number (36451823366).

Almost surely, 2^312444200220 is an apocalyptic number.

312444200220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312444200220 is an abundant number, since it is smaller than the sum of its proper divisors (562399560564).

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

312444200220 is a wasteful number, since it uses less digits than its factorization.

312444200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207403349 (or 5207403347 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 312444200220 its reverse (22002444213), we get a palindrome (334446644433).

The spelling of 312444200220 in words is "three hundred twelve billion, four hundred forty-four million, two hundred thousand, two hundred twenty".