2312042121 has 6 divisors (see below), whose sum is σ = 3339616410. Its totient is φ = 1541361408.

The previous prime is 2312042119. The next prime is 2312042123. The reversal of 2312042121 is 1212402132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2312042119) and next prime (2312042123).

It can be written as a sum of positive squares in only one way, i.e., 1790559225 + 521482896 = 42315^2 + 22836^2 .

It is not a de Polignac number, because 2312042121 - 2¹ = 2312042119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2312042094 and 2312042103.

It is not an unprimeable number, because it can be changed into a prime (2312042123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128446776 + ... + 128446793.

It is an arithmetic number, because the mean of its divisors is an integer number (556602735).

Almost surely, 2^2312042121 is an apocalyptic number.

It is an amenable number.

2312042121 is a deficient number, since it is larger than the sum of its proper divisors (1027574289).

2312042121 is a wasteful number, since it uses less digits than its factorization.

2312042121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256893575 (or 256893572 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2312042121 is about 48083.6991193481. The cubic root of 2312042121 is about 1322.3058337042.

Adding to 2312042121 its reverse (1212402132), we get a palindrome (3524444253).

The spelling of 2312042121 in words is "two billion, three hundred twelve million, forty-two thousand, one hundred twenty-one".