723351 has 4 divisors (see below), whose sum is σ = 964472. Its totient is φ = 482232.

The previous prime is 723337. The next prime is 723353. The reversal of 723351 is 153327.

It is a happy number.

723351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153327 = 3 ⋅51109.

It is not a de Polignac number, because 723351 - 2⁵ = 723319 is a prime.

It is a D-number.

It is the 851-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723353) by changing a digit.

It is a nontrivial repunit in base 850.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120556 + ... + 120561.

It is an arithmetic number, because the mean of its divisors is an integer number (241118).

2⁷²³³⁵¹ is an apocalyptic number.

723351 is a deficient number, since it is larger than the sum of its proper divisors (241121).

723351 is a wasteful number, since it uses less digits than its factorization.

723351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241120.

The product of its digits is 630, while the sum is 21.

The square root of 723351 is about 850.5004409170. The cubic root of 723351 is about 89.7669278002.

Adding to 723351 its reverse (153327), we get a palindrome (876678).

The spelling of 723351 in words is "seven hundred twenty-three thousand, three hundred fifty-one".