123231130 has 32 divisors (see below), whose sum is σ = 256219200. Its totient is φ = 42174720.

The previous prime is 123231109. The next prime is 123231161. The reversal of 123231130 is 31132321.

It is a super-2 number, since 2×123231130² = 30371822802153800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31080 + ... + 34819.

It is an arithmetic number, because the mean of its divisors is an integer number (8006850).

Almost surely, 2^123231130 is an apocalyptic number.

123231130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123231130 is an abundant number, since it is smaller than the sum of its proper divisors (132988070).

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

123231130 is a wasteful number, since it uses less digits than its factorization.

123231130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65934.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123231130 is about 11100.9517609978. The cubic root of 123231130 is about 497.6302933907.

Adding to 123231130 its reverse (31132321), we get a palindrome (154363451).

The spelling of 123231130 in words is "one hundred twenty-three million, two hundred thirty-one thousand, one hundred thirty".