123017983 has 4 divisors (see below), whose sum is σ = 134201448. Its totient is φ = 111834520.

The previous prime is 123017977. The next prime is 123018037. The reversal of 123017983 is 389710321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123017983 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 (123017383) 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, 5591716 + ... + 5591737.

It is an arithmetic number, because the mean of its divisors is an integer number (33550362).

Almost surely, 2^123017983 is an apocalyptic number.

123017983 is a deficient number, since it is larger than the sum of its proper divisors (11183465).

123017983 is a wasteful number, since it uses less digits than its factorization.

123017983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11183464.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 123017983 is about 11091.3472130305. The cubic root of 123017983 is about 497.3432186967.

The spelling of 123017983 in words is "one hundred twenty-three million, seventeen thousand, nine hundred eighty-three".