123403433 has 4 divisors (see below), whose sum is σ = 123883860. Its totient is φ = 122923008.

The previous prime is 123403429. The next prime is 123403453. The reversal of 123403433 is 334304321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334304321 = 13 ⋅25715717.

It can be written as a sum of positive squares in 2 ways, for example, as 89624089 + 33779344 = 9467^2 + 5812^2 .

It is a cyclic number.

It is not a de Polignac number, because 123403433 - 2² = 123403429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123403399 and 123403408.

It is not an unprimeable number, because it can be changed into a prime (123403453) 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 in 3 ways as a sum of consecutive naturals, for example, 239828 + ... + 240341.

It is an arithmetic number, because the mean of its divisors is an integer number (30970965).

Almost surely, 2^123403433 is an apocalyptic number.

It is an amenable number.

123403433 is a deficient number, since it is larger than the sum of its proper divisors (480427).

123403433 is an equidigital number, since it uses as much as digits as its factorization.

123403433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480426.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 123403433 is about 11108.7097810682. The cubic root of 123403433 is about 497.8621159318.

Adding to 123403433 its reverse (334304321), we get a palindrome (457707754).

The spelling of 123403433 in words is "one hundred twenty-three million, four hundred three thousand, four hundred thirty-three".