2321020 has 48 divisors (see below), whose sum is σ = 5362560. Its totient is φ = 838656.

The previous prime is 2321017. The next prime is 2321023. The reversal of 2321020 is 201232.

It is an interprime number because it is at equal distance from previous prime (2321017) and next prime (2321023).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2320988 and 2321006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20484 + ... + 20596.

It is an arithmetic number, because the mean of its divisors is an integer number (111720).

2^2321020 is an apocalyptic number.

2321020 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 2321020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2681280).

2321020 is an abundant number, since it is smaller than the sum of its proper divisors (3041540).

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

2321020 is a wasteful number, since it uses less digits than its factorization.

2321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2321020 is about 1523.4894157821. The cubic root of 2321020 is about 132.4015169458.

Adding to 2321020 its reverse (201232), we get a palindrome (2522252).

The spelling of 2321020 in words is "two million, three hundred twenty-one thousand, twenty".