321240248 has 64 divisors (see below), whose sum is σ = 709974720. Its totient is φ = 133401600.

The previous prime is 321240233. The next prime is 321240263. The reversal of 321240248 is 842042123.

It is an interprime number because it is at equal distance from previous prime (321240233) and next prime (321240263).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415190 + ... + 415962.

It is an arithmetic number, because the mean of its divisors is an integer number (11093355).

Almost surely, 2^321240248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321240248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354987360).

321240248 is an abundant number, since it is smaller than the sum of its proper divisors (388734472).

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

321240248 is a wasteful number, since it uses less digits than its factorization.

321240248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 321240248 is about 17923.1762810056. The cubic root of 321240248 is about 684.8729037645.

The spelling of 321240248 in words is "three hundred twenty-one million, two hundred forty thousand, two hundred forty-eight".