720133331 has 8 divisors (see below), whose sum is σ = 745247184. Its totient is φ = 695316960.

The previous prime is 720133327. The next prime is 720133339. The reversal of 720133331 is 133331027.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 720133331 - 2² = 720133327 is a prime.

It is a super-2 number, since 2×720133331² = 1037184028834311122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720133297 and 720133306.

It is not an unprimeable number, because it can be changed into a prime (720133339) 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 7 ways as a sum of consecutive naturals, for example, 69440 + ... + 79133.

It is an arithmetic number, because the mean of its divisors is an integer number (93155898).

Almost surely, 2^720133331 is an apocalyptic number.

720133331 is a deficient number, since it is larger than the sum of its proper divisors (25113853).

720133331 is a wasteful number, since it uses less digits than its factorization.

720133331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148741.

The product of its (nonzero) digits is 1134, while the sum is 23.

The square root of 720133331 is about 26835.3000914840. The cubic root of 720133331 is about 896.3362709130.

Adding to 720133331 its reverse (133331027), we get a palindrome (853464358).

The spelling of 720133331 in words is "seven hundred twenty million, one hundred thirty-three thousand, three hundred thirty-one".