312220241 has 2 divisors, whose sum is σ = 312220242. Its totient is φ = 312220240.

The previous prime is 312220231. The next prime is 312220247. The reversal of 312220241 is 142022213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307827025 + 4393216 = 17545^2 + 2096^2 .

It is a cyclic number.

It is not a de Polignac number, because 312220241 - 2¹⁰ = 312219217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312220247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156110120 + 156110121.

It is an arithmetic number, because the mean of its divisors is an integer number (156110121).

Almost surely, 2^312220241 is an apocalyptic number.

It is an amenable number.

312220241 is a deficient number, since it is larger than the sum of its proper divisors (1).

312220241 is an equidigital number, since it uses as much as digits as its factorization.

312220241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 312220241 is about 17669.7549784936. The cubic root of 312220241 is about 678.4018416213.

Adding to 312220241 its reverse (142022213), we get a palindrome (454242454).

The spelling of 312220241 in words is "three hundred twelve million, two hundred twenty thousand, two hundred forty-one".