2312440020 has 72 divisors (see below), whose sum is σ = 7652080800. Its totient is φ = 560591040.

The previous prime is 2312439971. The next prime is 2312440021. The reversal of 2312440020 is 200442132.

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

It is a junction number, because it is equal to n+sod(n) for n = 2312439975 and 2312440002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312440021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 581970 + ... + 585929.

It is an arithmetic number, because the mean of its divisors is an integer number (106278900).

Almost surely, 2^2312440020 is an apocalyptic number.

2312440020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312440020 is an abundant number, since it is smaller than the sum of its proper divisors (5339640780).

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

2312440020 is a wasteful number, since it uses less digits than its factorization.

2312440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167925 (or 1167920 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2312440020 is about 48087.8365077906. The cubic root of 2312440020 is about 1322.3816849736.

Adding to 2312440020 its reverse (200442132), we get a palindrome (2512882152).

The spelling of 2312440020 in words is "two billion, three hundred twelve million, four hundred forty thousand, twenty".