723130 has 8 divisors (see below), whose sum is σ = 1301652. Its totient is φ = 289248.

The previous prime is 723127. The next prime is 723133. The reversal of 723130 is 31327.

It is an interprime number because it is at equal distance from previous prime (723127) and next prime (723133).

It can be written as a sum of positive squares in 2 ways, for example, as 693889 + 29241 = 833^2 + 171^2 .

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

It is not an unprimeable number, because it can be changed into a prime (723133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36147 + ... + 36166.

2⁷²³¹³⁰ is an apocalyptic number.

723130 is a deficient number, since it is larger than the sum of its proper divisors (578522).

723130 is a wasteful number, since it uses less digits than its factorization.

723130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72320.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 723130 is about 850.3705074848. The cubic root of 723130 is about 89.7577849306.

Adding to 723130 its reverse (31327), we get a palindrome (754457).

The spelling of 723130 in words is "seven hundred twenty-three thousand, one hundred thirty".