323131223040 has 352 divisors, whose sum is σ = 1077577482240. Its totient is φ = 82550784000.

The previous prime is 323131223039. The next prime is 323131223047. The reversal of 323131223040 is 40322131323.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 323131223040.

It is not an unprimeable number, because it can be changed into a prime (323131223047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48088801 + ... + 48095519.

Almost surely, 2^323131223040 is an apocalyptic number.

323131223040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323131223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538788741120).

323131223040 is an abundant number, since it is smaller than the sum of its proper divisors (754446259200).

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

323131223040 is a wasteful number, since it uses less digits than its factorization.

323131223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6879 (or 6861 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 323131223040 its reverse (40322131323), we get a palindrome (363453354363).

The spelling of 323131223040 in words is "three hundred twenty-three billion, one hundred thirty-one million, two hundred twenty-three thousand, forty".