723071133 has 6 divisors (see below), whose sum is σ = 1044436094. Its totient is φ = 482047416.

The previous prime is 723071117. The next prime is 723071161. The reversal of 723071133 is 331170327.

It can be written as a sum of positive squares in only one way, i.e., 493639524 + 229431609 = 22218^2 + 15147^2 .

It is not a de Polignac number, because 723071133 - 2⁴ = 723071117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 723071097 and 723071106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723071933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40170610 + ... + 40170627.

Almost surely, 2^723071133 is an apocalyptic number.

It is an amenable number.

723071133 is a deficient number, since it is larger than the sum of its proper divisors (321364961).

723071133 is a wasteful number, since it uses less digits than its factorization.

723071133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80341243 (or 80341240 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 723071133 is about 26889.9820193320. The cubic root of 723071133 is about 897.5534926205.

The spelling of 723071133 in words is "seven hundred twenty-three million, seventy-one thousand, one hundred thirty-three".