302443021997 has 2 divisors, whose sum is σ = 302443021998. Its totient is φ = 302443021996.

The previous prime is 302443021987. The next prime is 302443022041. The reversal of 302443021997 is 799120344203.

It is an a-pointer prime, because the next prime (302443022041) can be obtained adding 302443021997 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291649682116 + 10793339881 = 540046^2 + 103891^2 .

It is a cyclic number.

It is not a de Polignac number, because 302443021997 - 2²⁴ = 302426244781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302443021987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151221510998 + 151221510999.

It is an arithmetic number, because the mean of its divisors is an integer number (151221510999).

Almost surely, 2^302443021997 is an apocalyptic number.

It is an amenable number.

302443021997 is a deficient number, since it is larger than the sum of its proper divisors (1).

302443021997 is an equidigital number, since it uses as much as digits as its factorization.

302443021997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 302443021997 in words is "three hundred two billion, four hundred forty-three million, twenty-one thousand, nine hundred ninety-seven".