321253430 has 32 divisors (see below), whose sum is σ = 593201664. Its totient is φ = 125195616.

The previous prime is 321253399. The next prime is 321253433. The reversal of 321253430 is 34352123.

It is a junction number, because it is equal to n+sod(n) for n = 321253396 and 321253405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321253433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241427 + ... + 242753.

It is an arithmetic number, because the mean of its divisors is an integer number (18537552).

Almost surely, 2^321253430 is an apocalyptic number.

321253430 is a deficient number, since it is larger than the sum of its proper divisors (271948234).

321253430 is a wasteful number, since it uses less digits than its factorization.

321253430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 321253430 is about 17923.5440133920. The cubic root of 321253430 is about 684.8822714897.

The spelling of 321253430 in words is "three hundred twenty-one million, two hundred fifty-three thousand, four hundred thirty".