123233032231 has 4 divisors (see below), whose sum is σ = 123249654592. Its totient is φ = 123216409872.

The previous prime is 123233032201. The next prime is 123233032267. The reversal of 123233032231 is 132230332321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132230332321 = 31 ⋅4265494591.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123233032231 is a prime.

It is a super-2 number, since 2×123233032231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123233032196 and 123233032205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123233032201) 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 3 ways as a sum of consecutive naturals, for example, 8300055 + ... + 8314888.

It is an arithmetic number, because the mean of its divisors is an integer number (30812413648).

Almost surely, 2^123233032231 is an apocalyptic number.

123233032231 is a deficient number, since it is larger than the sum of its proper divisors (16622361).

123233032231 is an equidigital number, since it uses as much as digits as its factorization.

123233032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16622360.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 123233032231 its reverse (132230332321), we get a palindrome (255463364552).

The spelling of 123233032231 in words is "one hundred twenty-three billion, two hundred thirty-three million, thirty-two thousand, two hundred thirty-one".