723241 has 4 divisors (see below), whose sum is σ = 726484. Its totient is φ = 720000.

The previous prime is 723227. The next prime is 723257. The reversal of 723241 is 142327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 469225 + 254016 = 685^2 + 504^2 .

It is a 4-Lehmer number, since φ(723241) divides (723241-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 723241 - 2⁵ = 723209 is a prime.

It is a super-3 number, since 3×723241³ = 1134933378176059563, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723221) 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, 1260 + ... + 1741.

It is an arithmetic number, because the mean of its divisors is an integer number (181621).

2⁷²³²⁴¹ is an apocalyptic number.

It is an amenable number.

723241 is a deficient number, since it is larger than the sum of its proper divisors (3243).

723241 is a wasteful number, since it uses less digits than its factorization.

723241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242.

The product of its digits is 336, while the sum is 19.

The square root of 723241 is about 850.4357706494. The cubic root of 723241 is about 89.7623772834.

Adding to 723241 its reverse (142327), we get a palindrome (865568).

The spelling of 723241 in words is "seven hundred twenty-three thousand, two hundred forty-one", and thus it is an iban number.