123232191 has 8 divisors (see below), whose sum is σ = 164478384. Its totient is φ = 82070400.

The previous prime is 123232189. The next prime is 123232211. The reversal of 123232191 is 191232321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123232191 - 2¹ = 123232189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123232121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17610 + ... + 23591.

It is an arithmetic number, because the mean of its divisors is an integer number (20559798).

Almost surely, 2^123232191 is an apocalyptic number.

123232191 is a deficient number, since it is larger than the sum of its proper divisors (41246193).

123232191 is an equidigital number, since it uses as much as digits as its factorization.

123232191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42201.

The product of its digits is 648, while the sum is 24.

The square root of 123232191 is about 11100.9995495901. Note that the first 3 decimals coincide. The cubic root of 123232191 is about 497.6317215585.

It can be divided in two parts, 1232321 and 91, that multiplied together give a palindrome (112141211).

The spelling of 123232191 in words is "one hundred twenty-three million, two hundred thirty-two thousand, one hundred ninety-one".