2321031240 has 256 divisors, whose sum is σ = 8732448000. Its totient is φ = 543191040.

The previous prime is 2321031239. The next prime is 2321031283. The reversal of 2321031240 is 421301232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 341152 + ... + 347888.

It is an arithmetic number, because the mean of its divisors is an integer number (34111125).

Almost surely, 2^2321031240 is an apocalyptic number.

2321031240 is a gapful number since it is divisible by the number (20) 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 2321031240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4366224000).

2321031240 is an abundant number, since it is smaller than the sum of its proper divisors (6411416760).

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

2321031240 is a wasteful number, since it uses less digits than its factorization.

2321031240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6797 (or 6787 counting only the distinct ones).

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

The square root of 2321031240 is about 48177.0821034234. The cubic root of 2321031240 is about 1324.0173067230.

Adding to 2321031240 its reverse (421301232), we get a palindrome (2742332472).

The spelling of 2321031240 in words is "two billion, three hundred twenty-one million, thirty-one thousand, two hundred forty".