321255430 has 16 divisors (see below), whose sum is σ = 578548944. Its totient is φ = 128437920.

The previous prime is 321255427. The next prime is 321255433. The reversal of 321255430 is 34552123.

It is an interprime number because it is at equal distance from previous prime (321255427) and next prime (321255433).

It is a junction number, because it is equal to n+sod(n) for n = 321255395 and 321255404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321255433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16549 + ... + 30271.

It is an arithmetic number, because the mean of its divisors is an integer number (36159309).

Almost surely, 2^321255430 is an apocalyptic number.

321255430 is a deficient number, since it is larger than the sum of its proper divisors (257293514).

321255430 is a wasteful number, since it uses less digits than its factorization.

321255430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16071.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 321255430 is about 17923.5998058426. The cubic root of 321255430 is about 684.8836927578.

The spelling of 321255430 in words is "three hundred twenty-one million, two hundred fifty-five thousand, four hundred thirty".