1234423513 has 2 divisors, whose sum is σ = 1234423514. Its totient is φ = 1234423512.

The previous prime is 1234423493. The next prime is 1234423523. The reversal of 1234423513 is 3153244321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1152466704 + 81956809 = 33948^2 + 9053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234423513 - 2⁵ = 1234423481 is a prime.

It is a super-2 number, since 2×1234423513² = 3047602818894522338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1234423523) 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, 617211756 + 617211757.

It is an arithmetic number, because the mean of its divisors is an integer number (617211757).

Almost surely, 2^1234423513 is an apocalyptic number.

It is an amenable number.

1234423513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234423513 is an equidigital number, since it uses as much as digits as its factorization.

1234423513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

The square root of 1234423513 is about 35134.3637056372. The cubic root of 1234423513 is about 1072.7241596723.

Adding to 1234423513 its reverse (3153244321), we get a palindrome (4387667834).

The spelling of 1234423513 in words is "one billion, two hundred thirty-four million, four hundred twenty-three thousand, five hundred thirteen".