403123613 has 12 divisors (see below), whose sum is σ = 411685920. Its totient is φ = 394720776.

The previous prime is 403123607. The next prime is 403123639. The reversal of 403123613 is 316321304.

It is not a de Polignac number, because 403123613 - 2¹⁰ = 403122589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403129613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1122728 + ... + 1123086.

It is an arithmetic number, because the mean of its divisors is an integer number (34307160).

Almost surely, 2^403123613 is an apocalyptic number.

It is an amenable number.

403123613 is a deficient number, since it is larger than the sum of its proper divisors (8562307).

403123613 is an equidigital number, since it uses as much as digits as its factorization.

403123613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 403123613 is about 20077.9384648923. The cubic root of 403123613 is about 738.7192437019.

Adding to 403123613 its reverse (316321304), we get a palindrome (719444917).

The spelling of 403123613 in words is "four hundred three million, one hundred twenty-three thousand, six hundred thirteen".