312115241 has 2 divisors, whose sum is σ = 312115242. Its totient is φ = 312115240.

The previous prime is 312115213. The next prime is 312115249. The reversal of 312115241 is 142511213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224130841 + 87984400 = 14971^2 + 9380^2 .

It is a cyclic number.

It is not a de Polignac number, because 312115241 - 2¹⁰ = 312114217 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (312115249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156057620 + 156057621.

It is an arithmetic number, because the mean of its divisors is an integer number (156057621).

Almost surely, 2^312115241 is an apocalyptic number.

It is an amenable number.

312115241 is a deficient number, since it is larger than the sum of its proper divisors (1).

312115241 is an equidigital number, since it uses as much as digits as its factorization.

312115241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 312115241 is about 17666.7835499278. The cubic root of 312115241 is about 678.3257840070.

Adding to 312115241 its reverse (142511213), we get a palindrome (454626454).

The spelling of 312115241 in words is "three hundred twelve million, one hundred fifteen thousand, two hundred forty-one".