730031 has 4 divisors (see below), whose sum is σ = 772992. Its totient is φ = 687072.

The previous prime is 730021. The next prime is 730033. The reversal of 730031 is 130037.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130037 = 109 ⋅1193.

It is a de Polignac number, because none of the positive numbers 2^k-730031 is a prime.

It is a super-2 number, since 2×730031² = 1065890521922, 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 = 729988 and 730015.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 730031.

It is not an unprimeable number, because it can be changed into a prime (730033) 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, 21455 + ... + 21488.

It is an arithmetic number, because the mean of its divisors is an integer number (193248).

2⁷³⁰⁰³¹ is an apocalyptic number.

730031 is a deficient number, since it is larger than the sum of its proper divisors (42961).

730031 is a wasteful number, since it uses less digits than its factorization.

730031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42960.

The product of its (nonzero) digits is 63, while the sum is 14.

The square root of 730031 is about 854.4185157170. The cubic root of 730031 is about 90.0424079978.

Adding to 730031 its reverse (130037), we get a palindrome (860068).

The spelling of 730031 in words is "seven hundred thirty thousand, thirty-one".