1232223431 has 2 divisors, whose sum is σ = 1232223432. Its totient is φ = 1232223430.

The previous prime is 1232223403. The next prime is 1232223457. The reversal of 1232223431 is 1343222321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232223431 is a prime.

It is a super-2 number, since 2×1232223431² = 3036749167810823522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1232223397 and 1232223406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232223481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616111715 + 616111716.

It is an arithmetic number, because the mean of its divisors is an integer number (616111716).

Almost surely, 2^1232223431 is an apocalyptic number.

1232223431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232223431 is an equidigital number, since it uses as much as digits as its factorization.

1232223431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 1232223431 is about 35103.0401959716. The cubic root of 1232223431 is about 1072.0864842489.

Adding to 1232223431 its reverse (1343222321), we get a palindrome (2575445752).

It can be divided in two parts, 12322 and 23431, that added together give a palindrome (35753).

The spelling of 1232223431 in words is "one billion, two hundred thirty-two million, two hundred twenty-three thousand, four hundred thirty-one".