323031040 has 52 divisors (see below), whose sum is σ = 775229004. Its totient is φ = 129204224.

The previous prime is 323031031. The next prime is 323031089. The reversal of 323031040 is 40130323.

It can be written as a sum of positive squares in 2 ways, for example, as 152571904 + 170459136 = 12352^2 + 13056^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 12594 + ... + 28366.

Almost surely, 2^323031040 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 323031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387614502).

323031040 is an abundant number, since it is smaller than the sum of its proper divisors (452197964).

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

323031040 is an equidigital number, since it uses as much as digits as its factorization.

323031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15802 (or 15780 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 323031040 is about 17973.0642907658. The cubic root of 323031040 is about 686.1431814169.

Adding to 323031040 its reverse (40130323), we get a palindrome (363161363).

The spelling of 323031040 in words is "three hundred twenty-three million, thirty-one thousand, forty".