2331031121 has 2 divisors, whose sum is σ = 2331031122. Its totient is φ = 2331031120.

The previous prime is 2331031099. The next prime is 2331031127. The reversal of 2331031121 is 1211301332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1172377600 + 1158653521 = 34240^2 + 34039^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331031121 - 2¹⁸ = 2330768977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2331031121.

It is not a weakly prime, because it can be changed into another prime (2331031127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165515560 + 1165515561.

It is an arithmetic number, because the mean of its divisors is an integer number (1165515561).

Almost surely, 2^2331031121 is an apocalyptic number.

It is an amenable number.

2331031121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331031121 is an equidigital number, since it uses as much as digits as its factorization.

2331031121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2331031121 is about 48280.7531113590. The cubic root of 2331031121 is about 1325.9160383917.

Adding to 2331031121 its reverse (1211301332), we get a palindrome (3542332453).

The spelling of 2331031121 in words is "two billion, three hundred thirty-one million, thirty-one thousand, one hundred twenty-one".