723651233 has 4 divisors (see below), whose sum is σ = 761738160. Its totient is φ = 685564308.

The previous prime is 723651193. The next prime is 723651251. The reversal of 723651233 is 332156327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332156327 = 5857 ⋅56711.

It is not a de Polignac number, because 723651233 - 2¹⁶ = 723585697 is a prime.

It is a super-2 number, since 2×723651233² = 1047342214044840578, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 723651233.

It is not an unprimeable number, because it can be changed into a prime (723651833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19043435 + ... + 19043472.

It is an arithmetic number, because the mean of its divisors is an integer number (190434540).

Almost surely, 2^723651233 is an apocalyptic number.

It is an amenable number.

723651233 is a deficient number, since it is larger than the sum of its proper divisors (38086927).

723651233 is a wasteful number, since it uses less digits than its factorization.

723651233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38086926.

The product of its digits is 22680, while the sum is 32.

The square root of 723651233 is about 26900.7664017217. The cubic root of 723651233 is about 897.7934559193.

The spelling of 723651233 in words is "seven hundred twenty-three million, six hundred fifty-one thousand, two hundred thirty-three".