312213134240 has 48 divisors (see below), whose sum is σ = 842975465472. Its totient is φ = 107044502784.

The previous prime is 312213134227. The next prime is 312213134243. The reversal of 312213134240 is 42431312213.

It is not an unprimeable number, because it can be changed into a prime (312213134243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139379744 + ... + 139381983.

It is an arithmetic number, because the mean of its divisors is an integer number (17561988864).

Almost surely, 2^312213134240 is an apocalyptic number.

It is an amenable number.

312213134240 is an abundant number, since it is smaller than the sum of its proper divisors (530762331232).

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

312213134240 is a wasteful number, since it uses less digits than its factorization.

312213134240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278761749 (or 278761741 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 312213134240 its reverse (42431312213), we get a palindrome (354644446453).

The spelling of 312213134240 in words is "three hundred twelve billion, two hundred thirteen million, one hundred thirty-four thousand, two hundred forty".