2331130330021 has 4 divisors (see below), whose sum is σ = 2394133852492. Its totient is φ = 2268126807552.

The previous prime is 2331130329977. The next prime is 2331130330117. The reversal of 2331130330021 is 1200330311332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1608356604100 + 722773725921 = 1268210^2 + 850161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331130330021 - 2¹⁷ = 2331130198949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2331130329974 and 2331130330001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331130334021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31501761180 + ... + 31501761253.

It is an arithmetic number, because the mean of its divisors is an integer number (598533463123).

Almost surely, 2^{2331130330021} is an apocalyptic number.

It is an amenable number.

2331130330021 is a deficient number, since it is larger than the sum of its proper divisors (63003522471).

2331130330021 is an equidigital number, since it uses as much as digits as its factorization.

2331130330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63003522470.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 2331130330021 its reverse (1200330311332), we get a palindrome (3531460641353).

The spelling of 2331130330021 in words is "two trillion, three hundred thirty-one billion, one hundred thirty million, three hundred thirty thousand, twenty-one".