723023131 has 4 divisors (see below), whose sum is σ = 761077000. Its totient is φ = 684969264.

The previous prime is 723023129. The next prime is 723023153. The reversal of 723023131 is 131320327.

It is a happy number.

723023131 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.

It is a cyclic number.

It is not a de Polignac number, because 723023131 - 2¹ = 723023129 is a prime.

It is a super-2 number, since 2×723023131² = 1045524895922086322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723023731) 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, 19026906 + ... + 19026943.

It is an arithmetic number, because the mean of its divisors is an integer number (190269250).

Almost surely, 2^723023131 is an apocalyptic number.

723023131 is a deficient number, since it is larger than the sum of its proper divisors (38053869).

723023131 is a wasteful number, since it uses less digits than its factorization.

723023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38053868.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 723023131 is about 26889.0894416304. The cubic root of 723023131 is about 897.5336304362.

Adding to 723023131 its reverse (131320327), we get a palindrome (854343458).

It can be divided in two parts, 72 and 3023131, that added together give a palindrome (3023203).

The spelling of 723023131 in words is "seven hundred twenty-three million, twenty-three thousand, one hundred thirty-one".