123108993 has 12 divisors (see below), whose sum is σ = 203227648. Its totient is φ = 70347960.

The previous prime is 123108991. The next prime is 123109009. The reversal of 123108993 is 399801321.

It is not a de Polignac number, because 123108993 - 2¹ = 123108991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123108991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 976993 + ... + 977118.

Almost surely, 2^123108993 is an apocalyptic number.

It is an amenable number.

123108993 is a deficient number, since it is larger than the sum of its proper divisors (80118655).

123108993 is a wasteful number, since it uses less digits than its factorization.

123108993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954124 (or 1954121 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 123108993 is about 11095.4492022631. The cubic root of 123108993 is about 497.4658350485.

The spelling of 123108993 in words is "one hundred twenty-three million, one hundred eight thousand, nine hundred ninety-three".