133140023 has 4 divisors (see below), whose sum is σ = 136738440. Its totient is φ = 129541608.

The previous prime is 133140019. The next prime is 133140037. The reversal of 133140023 is 320041331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320041331 = 109 ⋅2936159.

It is a cyclic number.

It is not a de Polignac number, because 133140023 - 2² = 133140019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133139983 and 133140010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133140053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1799153 + ... + 1799226.

It is an arithmetic number, because the mean of its divisors is an integer number (34184610).

Almost surely, 2^133140023 is an apocalyptic number.

133140023 is a deficient number, since it is larger than the sum of its proper divisors (3598417).

133140023 is an equidigital number, since it uses as much as digits as its factorization.

133140023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598416.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 133140023 is about 11538.6317646418. The cubic root of 133140023 is about 510.6259429626.

Adding to 133140023 its reverse (320041331), we get a palindrome (453181354).

The spelling of 133140023 in words is "one hundred thirty-three million, one hundred forty thousand, twenty-three".