2331013121 has 4 divisors (see below), whose sum is σ = 2332580100. Its totient is φ = 2329446144.

The previous prime is 2331013079. The next prime is 2331013133. The reversal of 2331013121 is 1213101332.

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 1412256400 + 918756721 = 37580^2 + 30311^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331013121 - 2¹⁰ = 2331012097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2331013121.

It is not an unprimeable number, because it can be changed into a prime (2331013621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781256 + ... + 784233.

It is an arithmetic number, because the mean of its divisors is an integer number (583145025).

Almost surely, 2^2331013121 is an apocalyptic number.

It is an amenable number.

2331013121 is a deficient number, since it is larger than the sum of its proper divisors (1566979).

2331013121 is a wasteful number, since it uses less digits than its factorization.

2331013121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566978.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2331013121 is about 48280.5667013137. The cubic root of 2331013121 is about 1325.9126255172.

Adding to 2331013121 its reverse (1213101332), we get a palindrome (3544114453).

The spelling of 2331013121 in words is "two billion, three hundred thirty-one million, thirteen thousand, one hundred twenty-one".