123233705951 has 4 divisors (see below), whose sum is σ = 123355359192. Its totient is φ = 123112052712.

The previous prime is 123233705893. The next prime is 123233705971. The reversal of 123233705951 is 159507332321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123233705951 - 2⁶ = 123233705887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123233705899 and 123233705908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123233705971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60825101 + ... + 60827126.

It is an arithmetic number, because the mean of its divisors is an integer number (30838839798).

Almost surely, 2^123233705951 is an apocalyptic number.

123233705951 is a deficient number, since it is larger than the sum of its proper divisors (121653241).

123233705951 is a wasteful number, since it uses less digits than its factorization.

123233705951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121653240.

The product of its (nonzero) digits is 170100, while the sum is 41.

The spelling of 123233705951 in words is "one hundred twenty-three billion, two hundred thirty-three million, seven hundred five thousand, nine hundred fifty-one".