321261748 has 12 divisors (see below), whose sum is σ = 563983812. Its totient is φ = 160123520.

The previous prime is 321261737. The next prime is 321261749. The reversal of 321261748 is 847162123.

It can be written as a sum of positive squares in 2 ways, for example, as 40297104 + 280964644 = 6348^2 + 16762^2 .

It is a super-2 number, since 2×321261748² = 206418221456031008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321261749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125413 + ... + 127948.

It is an arithmetic number, because the mean of its divisors is an integer number (46998651).

Almost surely, 2^321261748 is an apocalyptic number.

It is an amenable number.

321261748 is a deficient number, since it is larger than the sum of its proper divisors (242722064).

321261748 is a wasteful number, since it uses less digits than its factorization.

321261748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253682 (or 253680 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 321261748 is about 17923.7760530531. The cubic root of 321261748 is about 684.8881825048. Note that the first 3 decimals are identical.

The spelling of 321261748 in words is "three hundred twenty-one million, two hundred sixty-one thousand, seven hundred forty-eight".