123931443 has 16 divisors (see below), whose sum is σ = 170269856. Its totient is φ = 80144640.

The previous prime is 123931439. The next prime is 123931453. The reversal of 123931443 is 344139321.

It is not a de Polignac number, because 123931443 - 2² = 123931439 is a prime.

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 123931443.

It is not an unprimeable number, because it can be changed into a prime (123931453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8721 + ... + 17997.

It is an arithmetic number, because the mean of its divisors is an integer number (10641866).

Almost surely, 2^123931443 is an apocalyptic number.

123931443 is a deficient number, since it is larger than the sum of its proper divisors (46338413).

123931443 is an equidigital number, since it uses as much as digits as its factorization.

123931443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9414.

The product of its digits is 7776, while the sum is 30.

The square root of 123931443 is about 11132.4499998877. The cubic root of 123931443 is about 498.5711781589.

The spelling of 123931443 in words is "one hundred twenty-three million, nine hundred thirty-one thousand, four hundred forty-three".