2311142020 has 48 divisors (see below), whose sum is σ = 5322433536. Its totient is φ = 836000000.

The previous prime is 2311142011. The next prime is 2311142033. The reversal of 2311142020 is 202411132.

It is a junction number, because it is equal to n+sod(n) for n = 2311141985 and 2311142003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14520 + ... + 69520.

It is an arithmetic number, because the mean of its divisors is an integer number (110884032).

Almost surely, 2^2311142020 is an apocalyptic number.

2311142020 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 2311142020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661216768).

2311142020 is an abundant number, since it is smaller than the sum of its proper divisors (3011291516).

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

2311142020 is a wasteful number, since it uses less digits than its factorization.

2311142020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55212 (or 55210 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2311142020 is about 48074.3384769879. The cubic root of 2311142020 is about 1322.1342158259.

Adding to 2311142020 its reverse (202411132), we get a palindrome (2513553152).

The spelling of 2311142020 in words is "two billion, three hundred eleven million, one hundred forty-two thousand, twenty".