321355112 has 64 divisors (see below), whose sum is σ = 666928080. Its totient is φ = 144248832.

The previous prime is 321355093. The next prime is 321355117. The reversal of 321355112 is 211553123.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 173343556 + 148011556 = 13166^2 + 12166^2 .

It is not an unprimeable number, because it can be changed into a prime (321355117) 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, 953408 + ... + 953744.

Almost surely, 2^321355112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321355112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333464040).

321355112 is an abundant number, since it is smaller than the sum of its proper divisors (345572968).

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

321355112 is a wasteful number, since it uses less digits than its factorization.

321355112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 578 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 321355112 is about 17926.3803373687. The cubic root of 321355112 is about 684.9545227059.

The spelling of 321355112 in words is "three hundred twenty-one million, three hundred fifty-five thousand, one hundred twelve".