312340220432220 has 48 divisors (see below), whose sum is σ = 874553386458528. Its totient is φ = 83290652186880.

The previous prime is 312340220432197. The next prime is 312340220432263. The reversal of 312340220432220 is 22234022043213.

It is a super-2 number, since 2×312340220432220² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124771522 + ... + 127250198.

It is an arithmetic number, because the mean of its divisors is an integer number (18219862217886).

Almost surely, 2^{312340220432220} is an apocalyptic number.

312340220432220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312340220432220 is an abundant number, since it is smaller than the sum of its proper divisors (562213166026308).

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

312340220432220 is a wasteful number, since it uses less digits than its factorization.

312340220432220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578870 (or 4578868 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 312340220432220 its reverse (22234022043213), we get a palindrome (334574242475433).

The spelling of 312340220432220 in words is "three hundred twelve trillion, three hundred forty billion, two hundred twenty million, four hundred thirty-two thousand, two hundred twenty".