861322303 has 2 divisors, whose sum is σ = 861322304. Its totient is φ = 861322302.

The previous prime is 861322279. The next prime is 861322309. The reversal of 861322303 is 303223168.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-861322303 is a prime.

It is a super-2 number, since 2×861322303² = 1483752219290447618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861322309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430661151 + 430661152.

It is an arithmetic number, because the mean of its divisors is an integer number (430661152).

Almost surely, 2^861322303 is an apocalyptic number.

861322303 is a deficient number, since it is larger than the sum of its proper divisors (1).

861322303 is an equidigital number, since it uses as much as digits as its factorization.

861322303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 861322303 is about 29348.2930168008. The cubic root of 861322303 is about 951.4556826339.

The spelling of 861322303 in words is "eight hundred sixty-one million, three hundred twenty-two thousand, three hundred three".