2311231332020 has 96 divisors (see below), whose sum is σ = 5497353308160. Its totient is φ = 810267194880.

The previous prime is 2311231331999. The next prime is 2311231332043. The reversal of 2311231332020 is 202331321132.

It is a super-2 number, since 2×2311231332020² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2278040 + ... + 3132399.

It is an arithmetic number, because the mean of its divisors is an integer number (57264096960).

Almost surely, 2^{2311231332020} is an apocalyptic number.

2311231332020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311231332020 is an abundant number, since it is smaller than the sum of its proper divisors (3186121976140).

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

2311231332020 is a wasteful number, since it uses less digits than its factorization.

2311231332020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410545 (or 5410543 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2311231332020 its reverse (202331321132), we get a palindrome (2513562653152).

The spelling of 2311231332020 in words is "two trillion, three hundred eleven billion, two hundred thirty-one million, three hundred thirty-two thousand, twenty".