123231536 has 20 divisors (see below), whose sum is σ = 241446600. Its totient is φ = 60922752.

The previous prime is 123231523. The next prime is 123231583. The reversal of 123231536 is 635132321.

It is a super-2 number, since 2×123231536² = 30372022929838592, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 41846 + ... + 44693.

It is an arithmetic number, because the mean of its divisors is an integer number (12072330).

Almost surely, 2^123231536 is an apocalyptic number.

123231536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123231536 is a deficient number, since it is larger than the sum of its proper divisors (118215064).

123231536 is an equidigital number, since it uses as much as digits as its factorization.

123231536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86636 (or 86630 counting only the distinct ones).

The product of its digits is 3240, while the sum is 26.

The square root of 123231536 is about 11100.9700477030. The cubic root of 123231536 is about 497.6308398913.

Adding to 123231536 its reverse (635132321), we get a palindrome (758363857).

It can be divided in two parts, 1232 and 31536, that added together give a 15-th power (32768 = 2¹⁵).

The spelling of 123231536 in words is "one hundred twenty-three million, two hundred thirty-one thousand, five hundred thirty-six".