123906943317 has 4 divisors (see below), whose sum is σ = 165209257760. Its totient is φ = 82604628876.

The previous prime is 123906943313. The next prime is 123906943357. The reversal of 123906943317 is 713349609321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 123906943317 - 2² = 123906943313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123906943313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20651157217 + ... + 20651157222.

It is an arithmetic number, because the mean of its divisors is an integer number (41302314440).

Almost surely, 2^123906943317 is an apocalyptic number.

It is an amenable number.

123906943317 is a deficient number, since it is larger than the sum of its proper divisors (41302314443).

123906943317 is an equidigital number, since it uses as much as digits as its factorization.

123906943317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41302314442.

The product of its (nonzero) digits is 734832, while the sum is 48.

The spelling of 123906943317 in words is "one hundred twenty-three billion, nine hundred six million, nine hundred forty-three thousand, three hundred seventeen".