123823667 has 4 divisors (see below), whose sum is σ = 135080376. Its totient is φ = 112566960.

The previous prime is 123823663. The next prime is 123823681. The reversal of 123823667 is 766328321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766328321 = 11 ⋅69666211.

It is not a de Polignac number, because 123823667 - 2² = 123823663 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 123823667.

It is not an unprimeable number, because it can be changed into a prime (123823663) 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, 5628338 + ... + 5628359.

It is an arithmetic number, because the mean of its divisors is an integer number (33770094).

Almost surely, 2^123823667 is an apocalyptic number.

123823667 is a deficient number, since it is larger than the sum of its proper divisors (11256709).

123823667 is a wasteful number, since it uses less digits than its factorization.

123823667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11256708.

The product of its digits is 72576, while the sum is 38.

The square root of 123823667 is about 11127.6083234449. The cubic root of 123823667 is about 498.4266100817.

The spelling of 123823667 in words is "one hundred twenty-three million, eight hundred twenty-three thousand, six hundred sixty-seven".