321137268 has 12 divisors (see below), whose sum is σ = 749320320. Its totient is φ = 107045752.

The previous prime is 321137249. The next prime is 321137269. The reversal of 321137268 is 862731123.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321137269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13380708 + ... + 13380731.

It is an arithmetic number, because the mean of its divisors is an integer number (62443360).

Almost surely, 2^321137268 is an apocalyptic number.

It is an amenable number.

321137268 is an abundant number, since it is smaller than the sum of its proper divisors (428183052).

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

321137268 is a wasteful number, since it uses less digits than its factorization.

321137268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26761446 (or 26761444 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 321137268 is about 17920.3032340415. The cubic root of 321137268 is about 684.7997126977.

The spelling of 321137268 in words is "three hundred twenty-one million, one hundred thirty-seven thousand, two hundred sixty-eight".