312013240221 has 48 divisors (see below), whose sum is σ = 461217643200. Its totient is φ = 187347750912.

The previous prime is 312013240183. The next prime is 312013240277. The reversal of 312013240221 is 122042310213.

It is not a de Polignac number, because 312013240221 - 2¹⁵ = 312013207453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312013640221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2786250 + ... + 2896068.

It is an arithmetic number, because the mean of its divisors is an integer number (9608700900).

Almost surely, 2^312013240221 is an apocalyptic number.

It is an amenable number.

312013240221 is a deficient number, since it is larger than the sum of its proper divisors (149204402979).

312013240221 is a wasteful number, since it uses less digits than its factorization.

312013240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109998 (or 109981 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 312013240221 its reverse (122042310213), we get a palindrome (434055550434).

The spelling of 312013240221 in words is "three hundred twelve billion, thirteen million, two hundred forty thousand, two hundred twenty-one".