321109432 has 16 divisors (see below), whose sum is σ = 688091760. Its totient is φ = 137618304.

The previous prime is 321109387. The next prime is 321109507. The reversal of 321109432 is 234901123.

321109432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×321109432² = 206222534638725248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321109397 and 321109406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2866993 + ... + 2867104.

It is an arithmetic number, because the mean of its divisors is an integer number (43005735).

Almost surely, 2^321109432 is an apocalyptic number.

It is an amenable number.

321109432 is an abundant number, since it is smaller than the sum of its proper divisors (366982328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321109432 is a wasteful number, since it uses less digits than its factorization.

321109432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5734110 (or 5734106 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 321109432 is about 17919.5265562458. The cubic root of 321109432 is about 684.7799261064.

The spelling of 321109432 in words is "three hundred twenty-one million, one hundred nine thousand, four hundred thirty-two".