723011 has 4 divisors (see below), whose sum is σ = 728832. Its totient is φ = 717192.

The previous prime is 722983. The next prime is 723029. The reversal of 723011 is 110327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110327 = 7 ⋅15761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723011 is a prime.

It is a super-2 number, since 2×723011² = 1045489812242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720 + ... + 2973.

It is an arithmetic number, because the mean of its divisors is an integer number (182208).

2⁷²³⁰¹¹ is an apocalyptic number.

723011 is a deficient number, since it is larger than the sum of its proper divisors (5821).

723011 is a wasteful number, since it uses less digits than its factorization.

723011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 723011 is about 850.3005351051. The cubic root of 723011 is about 89.7528610753.

Adding to 723011 its reverse (110327), we get a palindrome (833338).

The spelling of 723011 in words is "seven hundred twenty-three thousand, eleven", and thus it is an iban number.