2312278121 has 2 divisors, whose sum is σ = 2312278122. Its totient is φ = 2312278120.

The previous prime is 2312278081. The next prime is 2312278147. The reversal of 2312278121 is 1218722132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2025450025 + 286828096 = 45005^2 + 16936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2312278121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2312278421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156139060 + 1156139061.

It is an arithmetic number, because the mean of its divisors is an integer number (1156139061).

Almost surely, 2^2312278121 is an apocalyptic number.

It is an amenable number.

2312278121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312278121 is an equidigital number, since it uses as much as digits as its factorization.

2312278121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

The square root of 2312278121 is about 48086.1531108489. The cubic root of 2312278121 is about 1322.3508233055.

The spelling of 2312278121 in words is "two billion, three hundred twelve million, two hundred seventy-eight thousand, one hundred twenty-one".