123231000 has 64 divisors (see below), whose sum is σ = 384490080. Its totient is φ = 32860800.

The previous prime is 123230993. The next prime is 123231001. The reversal of 123231000 is 132321.

It is a happy number.

It is a super-2 number, since 2×123231000² = 30371758722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17539 + ... + 23538.

Almost surely, 2^123231000 is an apocalyptic number.

123231000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123231000 is an abundant number, since it is smaller than the sum of its proper divisors (261259080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123231000 is a wasteful number, since it uses less digits than its factorization.

123231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41101 (or 41087 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 123231000 is about 11100.9459056425. The cubic root of 123231000 is about 497.6301184025.

Adding to 123231000 its reverse (132321), we get a palindrome (123363321).

The spelling of 123231000 in words is "one hundred twenty-three million, two hundred thirty-one thousand".