133403023 has 6 divisors (see below), whose sum is σ = 144454344. Its totient is φ = 123141096.

The previous prime is 133403021. The next prime is 133403027. The reversal of 133403023 is 320304331.

It is not a de Polignac number, because 133403023 - 2¹ = 133403021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133403021) 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 5 ways as a sum of consecutive naturals, for example, 394515 + ... + 394852.

It is an arithmetic number, because the mean of its divisors is an integer number (24075724).

Almost surely, 2^133403023 is an apocalyptic number.

133403023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133403023 is a deficient number, since it is larger than the sum of its proper divisors (11051321).

133403023 is an equidigital number, since it uses as much as digits as its factorization.

133403023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789393 (or 789380 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 133403023 is about 11550.0226406705. The cubic root of 133403023 is about 510.9619458413.

Adding to 133403023 its reverse (320304331), we get a palindrome (453707354).

The spelling of 133403023 in words is "one hundred thirty-three million, four hundred three thousand, twenty-three".