1012320187 has 2 divisors, whose sum is σ = 1012320188. Its totient is φ = 1012320186.

The previous prime is 1012320167. The next prime is 1012320191. The reversal of 1012320187 is 7810232101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012320187 - 2¹⁹ = 1011795899 is a prime.

It is a super-2 number, since 2×1012320187² = 2049584322015429938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012320167) 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, 506160093 + 506160094.

It is an arithmetic number, because the mean of its divisors is an integer number (506160094).

Almost surely, 2^1012320187 is an apocalyptic number.

1012320187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012320187 is an equidigital number, since it uses as much as digits as its factorization.

1012320187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1012320187 is about 31816.9795392334. The cubic root of 1012320187 is about 1004.0899782721.

Adding to 1012320187 its reverse (7810232101), we get a palindrome (8822552288).

The spelling of 1012320187 in words is "one billion, twelve million, three hundred twenty thousand, one hundred eighty-seven".