2311323020 has 24 divisors (see below), whose sum is σ = 5109241200. Its totient is φ = 875869632.

The previous prime is 2311322983. The next prime is 2311323023. The reversal of 2311323020 is 203231132.

It is a super-4 number, since 4×2311323020⁴ (a number of 39 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2311323020.

It is not an unprimeable number, because it can be changed into a prime (2311323023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3040835 + ... + 3041594.

It is an arithmetic number, because the mean of its divisors is an integer number (212885050).

Almost surely, 2^2311323020 is an apocalyptic number.

2311323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311323020 is an abundant number, since it is smaller than the sum of its proper divisors (2797918180).

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

2311323020 is a wasteful number, since it uses less digits than its factorization.

2311323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6082457 (or 6082455 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2311323020 is about 48076.2209413344. The cubic root of 2311323020 is about 1322.1687297941.

Adding to 2311323020 its reverse (203231132), we get a palindrome (2514554152).

The spelling of 2311323020 in words is "two billion, three hundred eleven million, three hundred twenty-three thousand, twenty".