1235311423 has 2 divisors, whose sum is σ = 1235311424. Its totient is φ = 1235311422.

The previous prime is 1235311403. The next prime is 1235311447. The reversal of 1235311423 is 3241135321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235311423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1235311403) 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, 617655711 + 617655712.

It is an arithmetic number, because the mean of its divisors is an integer number (617655712).

Almost surely, 2^1235311423 is an apocalyptic number.

1235311423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235311423 is an equidigital number, since it uses as much as digits as its factorization.

1235311423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 1235311423 is about 35146.9973539704. The cubic root of 1235311423 is about 1072.9812983877.

Adding to 1235311423 its reverse (3241135321), we get a palindrome (4476446744).

The spelling of 1235311423 in words is "one billion, two hundred thirty-five million, three hundred eleven thousand, four hundred twenty-three".