2312323121 has 2 divisors, whose sum is σ = 2312323122. Its totient is φ = 2312323120.

The previous prime is 2312323081. The next prime is 2312323133. The reversal of 2312323121 is 1213232132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1239040000 + 1073283121 = 35200^2 + 32761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312323121 - 2²² = 2308128817 is a prime.

It is a super-2 number, since 2×2312323121² = 10693676431822361282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2312323093 and 2312323102.

It is not a weakly prime, because it can be changed into another prime (2312323171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156161560 + 1156161561.

It is an arithmetic number, because the mean of its divisors is an integer number (1156161561).

Almost surely, 2^2312323121 is an apocalyptic number.

It is an amenable number.

2312323121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312323121 is an equidigital number, since it uses as much as digits as its factorization.

2312323121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 2312323121 is about 48086.6210187408. The cubic root of 2312323121 is about 1322.3594014836.

Adding to 2312323121 its reverse (1213232132), we get a palindrome (3525555253).

The spelling of 2312323121 in words is "two billion, three hundred twelve million, three hundred twenty-three thousand, one hundred twenty-one".