321897012 has 24 divisors (see below), whose sum is σ = 790624800. Its totient is φ = 101651616.

The previous prime is 321896969. The next prime is 321897041. The reversal of 321897012 is 210798123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705687 + ... + 706142.

It is an arithmetic number, because the mean of its divisors is an integer number (32942700).

Almost surely, 2^321897012 is an apocalyptic number.

It is an amenable number.

321897012 is an abundant number, since it is smaller than the sum of its proper divisors (468727788).

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

321897012 is a wasteful number, since it uses less digits than its factorization.

321897012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411855 (or 1411853 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 321897012 is about 17941.4885670058. The cubic root of 321897012 is about 685.3393186312.

The spelling of 321897012 in words is "three hundred twenty-one million, eight hundred ninety-seven thousand, twelve".