321240477 has 8 divisors (see below), whose sum is σ = 431447616. Its totient is φ = 212596832.

The previous prime is 321240463. The next prime is 321240503. The reversal of 321240477 is 774042123.

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 321240477 - 2⁷ = 321240349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321240377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390393 + ... + 391214.

It is an arithmetic number, because the mean of its divisors is an integer number (53930952).

Almost surely, 2^321240477 is an apocalyptic number.

It is an amenable number.

321240477 is a deficient number, since it is larger than the sum of its proper divisors (110207139).

321240477 is a wasteful number, since it uses less digits than its factorization.

321240477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781747.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 321240477 is about 17923.1826693810. The cubic root of 321240477 is about 684.8730665045.

The spelling of 321240477 in words is "three hundred twenty-one million, two hundred forty thousand, four hundred seventy-seven".