312011004240220 has 12 divisors (see below), whose sum is σ = 655223108904504. Its totient is φ = 124804401696080.

The previous prime is 312011004240203. The next prime is 312011004240343. The reversal of 312011004240220 is 22042400110213.

It is a junction number, because it is equal to n+sod(n) for n = 312011004240191 and 312011004240200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7800275105986 + ... + 7800275106025.

It is an arithmetic number, because the mean of its divisors is an integer number (54601925742042).

Almost surely, 2^{312011004240220} is an apocalyptic number.

It is an amenable number.

312011004240220 is an abundant number, since it is smaller than the sum of its proper divisors (343212104664284).

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

312011004240220 is a wasteful number, since it uses less digits than its factorization.

312011004240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15600550212020 (or 15600550212018 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 312011004240220 its reverse (22042400110213), we get a palindrome (334053404350433).

The spelling of 312011004240220 in words is "three hundred twelve trillion, eleven billion, four million, two hundred forty thousand, two hundred twenty".