312220312297 has 2 divisors, whose sum is σ = 312220312298. Its totient is φ = 312220312296.

The previous prime is 312220312289. The next prime is 312220312309. The reversal of 312220312297 is 792213022213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229080933376 + 83139378921 = 478624^2 + 288339^2 .

It is a cyclic number.

It is not a de Polignac number, because 312220312297 - 2³ = 312220312289 is a prime.

It is a super-3 number, since 3×312220312297³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (312220312207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156110156148 + 156110156149.

It is an arithmetic number, because the mean of its divisors is an integer number (156110156149).

Almost surely, 2^312220312297 is an apocalyptic number.

It is an amenable number.

312220312297 is a deficient number, since it is larger than the sum of its proper divisors (1).

312220312297 is an equidigital number, since it uses as much as digits as its factorization.

312220312297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 312220312297 in words is "three hundred twelve billion, two hundred twenty million, three hundred twelve thousand, two hundred ninety-seven".