312044081 has 2 divisors, whose sum is σ = 312044082. Its totient is φ = 312044080.

The previous prime is 312044039. The next prime is 312044099. The reversal of 312044081 is 180440213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304153600 + 7890481 = 17440^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 312044081 - 2⁶ = 312044017 is a prime.

It is a super-2 number, since 2×312044081² = 194743016974269122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312044021) 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, 156022040 + 156022041.

It is an arithmetic number, because the mean of its divisors is an integer number (156022041).

Almost surely, 2^312044081 is an apocalyptic number.

It is an amenable number.

312044081 is a deficient number, since it is larger than the sum of its proper divisors (1).

312044081 is an equidigital number, since it uses as much as digits as its factorization.

312044081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 312044081 is about 17664.7694861835. The cubic root of 312044081 is about 678.2742289772.

Adding to 312044081 its reverse (180440213), we get a palindrome (492484294).

The spelling of 312044081 in words is "three hundred twelve million, forty-four thousand, eighty-one".