1012233191 has 2 divisors, whose sum is σ = 1012233192. Its totient is φ = 1012233190.

The previous prime is 1012233149. The next prime is 1012233203. The reversal of 1012233191 is 1913322101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012233191 - 2¹⁰ = 1012232167 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012233491) 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, 506116595 + 506116596.

It is an arithmetic number, because the mean of its divisors is an integer number (506116596).

Almost surely, 2^1012233191 is an apocalyptic number.

1012233191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012233191 is an equidigital number, since it uses as much as digits as its factorization.

1012233191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1012233191 is about 31815.6123782020. The cubic root of 1012233191 is about 1004.0612145419.

Adding to 1012233191 its reverse (1913322101), we get a palindrome (2925555292).

The spelling of 1012233191 in words is "one billion, twelve million, two hundred thirty-three thousand, one hundred ninety-one".