2031330021 has 16 divisors (see below), whose sum is σ = 3098893824. Its totient is φ = 1159434864.

The previous prime is 2031330013. The next prime is 2031330089. The reversal of 2031330021 is 1200331302.

It is not a de Polignac number, because 2031330021 - 2³ = 2031330013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031330001) 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, 36231 + ... + 73316.

It is an arithmetic number, because the mean of its divisors is an integer number (193680864).

Almost surely, 2^2031330021 is an apocalyptic number.

2031330021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2031330021 is a deficient number, since it is larger than the sum of its proper divisors (1067563803).

2031330021 is a wasteful number, since it uses less digits than its factorization.

2031330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110440.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 2031330021 is about 45070.2786878448. The cubic root of 2031330021 is about 1266.4658851268.

Adding to 2031330021 its reverse (1200331302), we get a palindrome (3231661323).

The spelling of 2031330021 in words is "two billion, thirty-one million, three hundred thirty thousand, twenty-one".