133001023 has 4 divisors (see below), whose sum is σ = 135830880. Its totient is φ = 130171168.

The previous prime is 133000999. The next prime is 133001027. The reversal of 133001023 is 320100331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320100331 = 13883 ⋅23057.

It is a cyclic number.

It is not a de Polignac number, because 133001023 - 2¹⁷ = 132869951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133000994 and 133001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133001027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414858 + ... + 1414951.

It is an arithmetic number, because the mean of its divisors is an integer number (33957720).

Almost surely, 2^133001023 is an apocalyptic number.

133001023 is a deficient number, since it is larger than the sum of its proper divisors (2829857).

133001023 is an equidigital number, since it uses as much as digits as its factorization.

133001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829856.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 133001023 is about 11532.6069472605. The cubic root of 133001023 is about 510.4481809365.

Adding to 133001023 its reverse (320100331), we get a palindrome (453101354).

The spelling of 133001023 in words is "one hundred thirty-three million, one thousand, twenty-three".