123097917 has 4 divisors (see below), whose sum is σ = 164130560. Its totient is φ = 82065276.

The previous prime is 123097889. The next prime is 123097937. The reversal of 123097917 is 719790321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 719790321 = 3 ⋅239930107.

It is not a de Polignac number, because 123097917 - 2¹⁰ = 123096893 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 (123097937) 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, 20516317 + ... + 20516322.

It is an arithmetic number, because the mean of its divisors is an integer number (41032640).

Almost surely, 2^123097917 is an apocalyptic number.

It is an amenable number.

123097917 is a deficient number, since it is larger than the sum of its proper divisors (41032643).

123097917 is an equidigital number, since it uses as much as digits as its factorization.

123097917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41032642.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 123097917 is about 11094.9500674857. The cubic root of 123097917 is about 497.4509157571.

The spelling of 123097917 in words is "one hundred twenty-three million, ninety-seven thousand, nine hundred seventeen".