312224323021 has 16 divisors (see below), whose sum is σ = 339959226880. Its totient is φ = 285027984000.

The previous prime is 312224323001. The next prime is 312224323027. The reversal of 312224323021 is 120323422213.

It is a cyclic number.

It is not a de Polignac number, because 312224323021 - 2²⁷ = 312090105293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312224323027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 850345 + ... + 1160833.

It is an arithmetic number, because the mean of its divisors is an integer number (21247451680).

Almost surely, 2^312224323021 is an apocalyptic number.

It is an amenable number.

312224323021 is a deficient number, since it is larger than the sum of its proper divisors (27734903859).

312224323021 is a wasteful number, since it uses less digits than its factorization.

312224323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311356.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 312224323021 its reverse (120323422213), we get a palindrome (432547745234).

The spelling of 312224323021 in words is "three hundred twelve billion, two hundred twenty-four million, three hundred twenty-three thousand, twenty-one".