723872423 has 2 divisors, whose sum is σ = 723872424. Its totient is φ = 723872422.

The previous prime is 723872389. The next prime is 723872437. The reversal of 723872423 is 324278327.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 723872423 - 2¹⁰ = 723871399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723872323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361936211 + 361936212.

It is an arithmetic number, because the mean of its divisors is an integer number (361936212).

Almost surely, 2^723872423 is an apocalyptic number.

723872423 is a deficient number, since it is larger than the sum of its proper divisors (1).

723872423 is an equidigital number, since it uses as much as digits as its factorization.

723872423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 38.

The square root of 723872423 is about 26904.8773087706. The cubic root of 723872423 is about 897.8849192726.

The spelling of 723872423 in words is "seven hundred twenty-three million, eight hundred seventy-two thousand, four hundred twenty-three".