133320723 has 4 divisors (see below), whose sum is σ = 177760968. Its totient is φ = 88880480.

The previous prime is 133320721. The next prime is 133320751. The reversal of 133320723 is 327023331.

It is a happy number.

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 133320723 - 2¹ = 133320721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133320693 and 133320702.

It is not an unprimeable number, because it can be changed into a prime (133320721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22220118 + ... + 22220123.

It is an arithmetic number, because the mean of its divisors is an integer number (44440242).

Almost surely, 2^133320723 is an apocalyptic number.

133320723 is a deficient number, since it is larger than the sum of its proper divisors (44440245).

133320723 is an equidigital number, since it uses as much as digits as its factorization.

133320723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44440244.

The product of its (nonzero) digits is 2268, while the sum is 24.

The square root of 133320723 is about 11546.4593274302. The cubic root of 133320723 is about 510.8568487256.

The spelling of 133320723 in words is "one hundred thirty-three million, three hundred twenty thousand, seven hundred twenty-three".