188231423 has 4 divisors (see below), whose sum is σ = 198138360. Its totient is φ = 178324488.

The previous prime is 188231419. The next prime is 188231441. The reversal of 188231423 is 324132881.

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 188231423 - 2² = 188231419 is a prime.

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 188231423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188231453) 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, 4953440 + ... + 4953477.

It is an arithmetic number, because the mean of its divisors is an integer number (49534590).

Almost surely, 2^188231423 is an apocalyptic number.

188231423 is a deficient number, since it is larger than the sum of its proper divisors (9906937).

188231423 is an equidigital number, since it uses as much as digits as its factorization.

188231423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9906936.

The product of its digits is 9216, while the sum is 32.

The square root of 188231423 is about 13719.7457337955. The cubic root of 188231423 is about 573.1003959165.

The spelling of 188231423 in words is "one hundred eighty-eight million, two hundred thirty-one thousand, four hundred twenty-three".