2331421020 has 36 divisors (see below), whose sum is σ = 7071977640. Its totient is φ = 621712224.

The previous prime is 2331421019. The next prime is 2331421033. The reversal of 2331421020 is 201241332.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 2331420984 and 2331421002.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6475990 + ... + 6476349.

Almost surely, 2^2331421020 is an apocalyptic number.

2331421020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2331421020 is an abundant number, since it is smaller than the sum of its proper divisors (4740556620).

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

2331421020 is a wasteful number, since it uses less digits than its factorization.

2331421020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12952354 (or 12952349 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2331421020 is about 48284.7907730788. The cubic root of 2331421020 is about 1325.9899605445.

Adding to 2331421020 its reverse (201241332), we get a palindrome (2532662352).

The spelling of 2331421020 in words is "two billion, three hundred thirty-one million, four hundred twenty-one thousand, twenty".