2331320121 has 96 divisors (see below), whose sum is σ = 4045641600. Its totient is φ = 1281764736.

The previous prime is 2331320113. The next prime is 2331320129. The reversal of 2331320121 is 1210231332.

2331320121 is a `hidden beast` number, since 2 + 331 + 320 + 12 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (2331320113) and next prime (2331320129).

It is not a de Polignac number, because 2331320121 - 2³ = 2331320113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2331320094 and 2331320103.

It is not an unprimeable number, because it can be changed into a prime (2331320129) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 54216726 + ... + 54216768.

It is an arithmetic number, because the mean of its divisors is an integer number (42142100).

Almost surely, 2^2331320121 is an apocalyptic number.

It is an amenable number.

2331320121 is a deficient number, since it is larger than the sum of its proper divisors (1714321479).

2331320121 is a wasteful number, since it uses less digits than its factorization.

2331320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2331320121 is about 48283.7459296604. The cubic root of 2331320121 is about 1325.9708315827.

Adding to 2331320121 its reverse (1210231332), we get a palindrome (3541551453).

It can be divided in two parts, 23313 and 20121, that added together give a palindrome (43434).

The spelling of 2331320121 in words is "two billion, three hundred thirty-one million, three hundred twenty thousand, one hundred twenty-one".