11223420431 has 2 divisors, whose sum is σ = 11223420432. Its totient is φ = 11223420430.

The previous prime is 11223420421. The next prime is 11223420437. The reversal of 11223420431 is 13402432211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11223420431 - 2⁶ = 11223420367 is a prime.

It is a super-3 number, since 3×11223420431³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 11223420397 and 11223420406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11223420437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611710215 + 5611710216.

It is an arithmetic number, because the mean of its divisors is an integer number (5611710216).

Almost surely, 2^11223420431 is an apocalyptic number.

11223420431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223420431 is an equidigital number, since it uses as much as digits as its factorization.

11223420431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 11223420431 its reverse (13402432211), we get a palindrome (24625852642).

The spelling of 11223420431 in words is "eleven billion, two hundred twenty-three million, four hundred twenty thousand, four hundred thirty-one".