123231195 has 24 divisors (see below), whose sum is σ = 215046000. Its totient is φ = 65278656.

The previous prime is 123231191. The next prime is 123231203. The reversal of 123231195 is 591132321.

It is not a de Polignac number, because 123231195 - 2² = 123231191 is a prime.

It is a super-2 number, since 2×123231195² = 30371854842256050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123231191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2485 + ... + 15894.

It is an arithmetic number, because the mean of its divisors is an integer number (8960250).

Almost surely, 2^123231195 is an apocalyptic number.

123231195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123231195 is a deficient number, since it is larger than the sum of its proper divisors (91814805).

123231195 is a wasteful number, since it uses less digits than its factorization.

123231195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18539 (or 18536 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 123231195 is about 11100.9546886743. The cubic root of 123231195 is about 497.6303808847.

The spelling of 123231195 in words is "one hundred twenty-three million, two hundred thirty-one thousand, one hundred ninety-five".