2321264140 has 72 divisors (see below), whose sum is σ = 5352364080. Its totient is φ = 840389376.

The previous prime is 2321264119. The next prime is 2321264149. The reversal of 2321264140 is 414621232.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2321264149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5967066 + ... + 5967454.

It is an arithmetic number, because the mean of its divisors is an integer number (74338390).

Almost surely, 2^2321264140 is an apocalyptic number.

2321264140 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 2321264140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2676182040).

2321264140 is an abundant number, since it is smaller than the sum of its proper divisors (3031099940).

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

2321264140 is a wasteful number, since it uses less digits than its factorization.

2321264140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2321264140 is about 48179.4991671769. The cubic root of 2321264140 is about 1324.0615906763.

Adding to 2321264140 its reverse (414621232), we get a palindrome (2735885372).

The spelling of 2321264140 in words is "two billion, three hundred twenty-one million, two hundred sixty-four thousand, one hundred forty".