403112123 has 4 divisors (see below), whose sum is σ = 412944168. Its totient is φ = 393280080.

The previous prime is 403112119. The next prime is 403112141. The reversal of 403112123 is 321211304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 403112123 - 2² = 403112119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403112023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4915961 + ... + 4916042.

It is an arithmetic number, because the mean of its divisors is an integer number (103236042).

Almost surely, 2^403112123 is an apocalyptic number.

403112123 is a deficient number, since it is larger than the sum of its proper divisors (9832045).

403112123 is an equidigital number, since it uses as much as digits as its factorization.

403112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832044.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 403112123 is about 20077.6523278993. The cubic root of 403112123 is about 738.7122252056.

Adding to 403112123 its reverse (321211304), we get a palindrome (724323427).

The spelling of 403112123 in words is "four hundred three million, one hundred twelve thousand, one hundred twenty-three".