312225013989 has 24 divisors (see below), whose sum is σ = 538074856320. Its totient is φ = 178414292952.

The previous prime is 312225013909. The next prime is 312225013999. The reversal of 312225013989 is 989310522213.

312225013989 is a `hidden beast` number, since 3 + 1 + 2 + 2 + 250 + 1 + 398 + 9 = 666.

It is not a de Polignac number, because 312225013989 - 2²⁰ = 312223965413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312225013909) 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 23 ways as a sum of consecutive naturals, for example, 117997549 + ... + 118000194.

It is an arithmetic number, because the mean of its divisors is an integer number (22419785680).

Almost surely, 2^312225013989 is an apocalyptic number.

It is an amenable number.

312225013989 is a deficient number, since it is larger than the sum of its proper divisors (225849842331).

312225013989 is a wasteful number, since it uses less digits than its factorization.

312225013989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235997766 (or 235997753 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 312225013989 in words is "three hundred twelve billion, two hundred twenty-five million, thirteen thousand, nine hundred eighty-nine".