1232817491 has 2 divisors, whose sum is σ = 1232817492. Its totient is φ = 1232817490.

The previous prime is 1232817431. The next prime is 1232817493. The reversal of 1232817491 is 1947182321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1232817491 - 2³⁰ = 159075667 is a prime.

It is a super-2 number, since 2×1232817491² = 3039677932231070162, which contains 22 as substring.

Together with 1232817493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1232817493) 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, 616408745 + 616408746.

It is an arithmetic number, because the mean of its divisors is an integer number (616408746).

Almost surely, 2^1232817491 is an apocalyptic number.

1232817491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232817491 is an equidigital number, since it uses as much as digits as its factorization.

1232817491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 1232817491 is about 35111.5008366205. The cubic root of 1232817491 is about 1072.2587423422.

The spelling of 1232817491 in words is "one billion, two hundred thirty-two million, eight hundred seventeen thousand, four hundred ninety-one".