1234431823 has 2 divisors, whose sum is σ = 1234431824. Its totient is φ = 1234431822.

The previous prime is 1234431817. The next prime is 1234431883. The reversal of 1234431823 is 3281344321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1234431823 - 2¹⁷ = 1234300751 is a prime.

It is a super-3 number, since 3×1234431823³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234431883) 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, 617215911 + 617215912.

It is an arithmetic number, because the mean of its divisors is an integer number (617215912).

Almost surely, 2^1234431823 is an apocalyptic number.

1234431823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234431823 is an equidigital number, since it uses as much as digits as its factorization.

1234431823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 1234431823 is about 35134.4819657271. The cubic root of 1234431823 is about 1072.7265668196.

The spelling of 1234431823 in words is "one billion, two hundred thirty-four million, four hundred thirty-one thousand, eight hundred twenty-three".