321272381 has 8 divisors (see below), whose sum is σ = 325873920. Its totient is φ = 316684368.

The previous prime is 321272339. The next prime is 321272383. The reversal of 321272381 is 183272123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321272381 - 2⁶ = 321272317 is a prime.

It is a super-2 number, since 2×321272381² = 206431885586818322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321272383) 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, 50480 + ... + 56486.

It is an arithmetic number, because the mean of its divisors is an integer number (40734240).

Almost surely, 2^321272381 is an apocalyptic number.

It is an amenable number.

321272381 is a deficient number, since it is larger than the sum of its proper divisors (4601539).

321272381 is an equidigital number, since it uses as much as digits as its factorization.

321272381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6763.

The product of its digits is 4032, while the sum is 29.

The square root of 321272381 is about 17924.0726677840. The cubic root of 321272381 is about 684.8957384782.

The spelling of 321272381 in words is "three hundred twenty-one million, two hundred seventy-two thousand, three hundred eighty-one".