1232431451 has 2 divisors, whose sum is σ = 1232431452. Its totient is φ = 1232431450.

The previous prime is 1232431441. The next prime is 1232431469. The reversal of 1232431451 is 1541342321.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1541342321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1232431451 - 2¹⁰ = 1232430427 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1232431451.

It is not a weakly prime, because it can be changed into another prime (1232431411) 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, 616215725 + 616215726.

It is an arithmetic number, because the mean of its divisors is an integer number (616215726).

Almost surely, 2^1232431451 is an apocalyptic number.

1232431451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232431451 is an equidigital number, since it uses as much as digits as its factorization.

1232431451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 1232431451 is about 35106.0030621545. The cubic root of 1232431451 is about 1072.1468095861.

Adding to 1232431451 its reverse (1541342321), we get a palindrome (2773773772).

The spelling of 1232431451 in words is "one billion, two hundred thirty-two million, four hundred thirty-one thousand, four hundred fifty-one".