1234403431 has 2 divisors, whose sum is σ = 1234403432. Its totient is φ = 1234403430.

The previous prime is 1234403411. The next prime is 1234403447. The reversal of 1234403431 is 1343044321.

It is a strong prime.

It is an emirp because it is prime and its reverse (1343044321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1234403431 - 2¹¹ = 1234401383 is a prime.

It is a super-2 number, since 2×1234403431² = 3047503660929143522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1234403396 and 1234403405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234403411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617201715 + 617201716.

It is an arithmetic number, because the mean of its divisors is an integer number (617201716).

Almost surely, 2^1234403431 is an apocalyptic number.

1234403431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234403431 is an equidigital number, since it uses as much as digits as its factorization.

1234403431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1234403431 is about 35134.0779158924. The cubic root of 1234403431 is about 1072.7183424998.

Adding to 1234403431 its reverse (1343044321), we get a palindrome (2577447752).

The spelling of 1234403431 in words is "one billion, two hundred thirty-four million, four hundred three thousand, four hundred thirty-one".