321032421 has 12 divisors (see below), whose sum is σ = 468048672. Its totient is φ = 212020776.

The previous prime is 321032389. The next prime is 321032423. The reversal of 321032421 is 124230123.

321032421 is a `hidden beast` number, since 3 + 210 + 32 + 421 = 666.

It is not a de Polignac number, because 321032421 - 2⁵ = 321032389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321032394 and 321032403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321032423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165721 + ... + 167646.

It is an arithmetic number, because the mean of its divisors is an integer number (39004056).

Almost surely, 2^321032421 is an apocalyptic number.

It is an amenable number.

321032421 is a deficient number, since it is larger than the sum of its proper divisors (147016251).

321032421 is a wasteful number, since it uses less digits than its factorization.

321032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333480 (or 333477 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 321032421 is about 17917.3776262041. The cubic root of 321032421 is about 684.7251786195.

Adding to 321032421 its reverse (124230123), we get a palindrome (445262544).

The spelling of 321032421 in words is "three hundred twenty-one million, thirty-two thousand, four hundred twenty-one".