321243043412 has 24 divisors (see below), whose sum is σ = 587224530816. Its totient is φ = 153479053728.

The previous prime is 321243043399. The next prime is 321243043417. The reversal of 321243043412 is 214340342123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321243043417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716503 + ... + 1894430.

It is an arithmetic number, because the mean of its divisors is an integer number (24467688784).

Almost surely, 2^321243043412 is an apocalyptic number.

It is an amenable number.

321243043412 is a deficient number, since it is larger than the sum of its proper divisors (265981487404).

321243043412 is a wasteful number, since it uses less digits than its factorization.

321243043412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611927 (or 3611925 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 321243043412 its reverse (214340342123), we get a palindrome (535583385535).

The spelling of 321243043412 in words is "three hundred twenty-one billion, two hundred forty-three million, forty-three thousand, four hundred twelve".