1232430989 has 2 divisors, whose sum is σ = 1232430990. Its totient is φ = 1232430988.

The previous prime is 1232430973. The next prime is 1232431019. The reversal of 1232430989 is 9890342321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 673817764 + 558613225 = 25958^2 + 23635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232430989 - 2⁴ = 1232430973 is a prime.

It is a super-2 number, since 2×1232430989² = 3037772285295036242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232430949) 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, 616215494 + 616215495.

It is an arithmetic number, because the mean of its divisors is an integer number (616215495).

Almost surely, 2^1232430989 is an apocalyptic number.

It is an amenable number.

1232430989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232430989 is an equidigital number, since it uses as much as digits as its factorization.

1232430989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1232430989 is about 35105.9964820827. The cubic root of 1232430989 is about 1072.1466756147.

The spelling of 1232430989 in words is "one billion, two hundred thirty-two million, four hundred thirty thousand, nine hundred eighty-nine".