123503521231 has 8 divisors (see below), whose sum is σ = 123848655264. Its totient is φ = 123158572800.

The previous prime is 123503521159. The next prime is 123503521247. The reversal of 123503521231 is 132125305321.

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

It is a cyclic number.

It is not a de Polignac number, because 123503521231 - 2²⁹ = 122966650319 is a prime.

It is a super-2 number, since 2×123503521231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123503521231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123503521261) 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, 1344195 + ... + 1433131.

It is an arithmetic number, because the mean of its divisors is an integer number (15481081908).

Almost surely, 2^123503521231 is an apocalyptic number.

123503521231 is a deficient number, since it is larger than the sum of its proper divisors (345134033).

123503521231 is an equidigital number, since it uses as much as digits as its factorization.

123503521231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92801.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 123503521231 its reverse (132125305321), we get a palindrome (255628826552).

The spelling of 123503521231 in words is "one hundred twenty-three billion, five hundred three million, five hundred twenty-one thousand, two hundred thirty-one".