2331021 has 16 divisors (see below), whose sum is σ = 3875328. Its totient is φ = 1210800.

The previous prime is 2330959. The next prime is 2331041. The reversal of 2331021 is 1201332.

It is a happy number.

It is not a de Polignac number, because 2331021 - 2⁶ = 2330957 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2330988 and 2331006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331041) 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, 4815 + ... + 5276.

It is an arithmetic number, because the mean of its divisors is an integer number (242208).

2^2331021 is an apocalyptic number.

2331021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2331021 is a deficient number, since it is larger than the sum of its proper divisors (1544307).

2331021 is a wasteful number, since it uses less digits than its factorization.

2331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10112.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2331021 is about 1526.7681552875. The cubic root of 2331021 is about 132.5914119410.

Adding to 2331021 its reverse (1201332), we get a palindrome (3532353).

The spelling of 2331021 in words is "two million, three hundred thirty-one thousand, twenty-one".