730351 has 4 divisors (see below), whose sum is σ = 733392. Its totient is φ = 727312.

The previous prime is 730339. The next prime is 730363. The reversal of 730351 is 153037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153037 = 43 ⋅3559.

It is an interprime number because it is at equal distance from previous prime (730339) and next prime (730363).

It is a cyclic number.

It is not a de Polignac number, because 730351 - 2¹¹ = 728303 is a prime.

It is a Duffinian number.

730351 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730321) 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, 1126 + ... + 1651.

It is an arithmetic number, because the mean of its divisors is an integer number (183348).

2⁷³⁰³⁵¹ is an apocalyptic number.

730351 is the 541-st centered pentagonal number.

730351 is a deficient number, since it is larger than the sum of its proper divisors (3041).

730351 is a wasteful number, since it uses less digits than its factorization.

730351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040.

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 730351 is about 854.6057570599. The cubic root of 730351 is about 90.0555623988.

Adding to 730351 its reverse (153037), we get a palindrome (883388).

It can be divided in two parts, 730 and 351, that added together give a triangular number (1081 = T₄₆).

The spelling of 730351 in words is "seven hundred thirty thousand, three hundred fifty-one".