2311304440 has 16 divisors (see below), whose sum is σ = 5200435080. Its totient is φ = 924521760.

The previous prime is 2311304407. The next prime is 2311304441. The reversal of 2311304440 is 444031132.

2311304440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311304441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28891266 + ... + 28891345.

Almost surely, 2^2311304440 is an apocalyptic number.

2311304440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311304440 is an abundant number, since it is smaller than the sum of its proper divisors (2889130640).

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

2311304440 is a wasteful number, since it uses less digits than its factorization.

2311304440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57782622 (or 57782618 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2311304440 is about 48076.0277061240. The cubic root of 2311304440 is about 1322.1651869515.

Adding to 2311304440 its reverse (444031132), we get a palindrome (2755335572).

The spelling of 2311304440 in words is "two billion, three hundred eleven million, three hundred four thousand, four hundred forty".