123816373 has 4 divisors (see below), whose sum is σ = 123852780. Its totient is φ = 123779968.

The previous prime is 123816367. The next prime is 123816379. The reversal of 123816373 is 373618321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 373618321 = 199 ⋅1877479.

It is an interprime number because it is at equal distance from previous prime (123816367) and next prime (123816379).

It can be written as a sum of positive squares in 2 ways, for example, as 32001649 + 91814724 = 5657^2 + 9582^2 .

It is a cyclic number.

It is not a de Polignac number, because 123816373 - 2¹⁷ = 123685301 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 (123816379) 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, 12508 + ... + 20101.

It is an arithmetic number, because the mean of its divisors is an integer number (30963195).

Almost surely, 2^123816373 is an apocalyptic number.

It is an amenable number.

123816373 is a deficient number, since it is larger than the sum of its proper divisors (36407).

123816373 is an equidigital number, since it uses as much as digits as its factorization.

123816373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36406.

The product of its digits is 18144, while the sum is 34.

The square root of 123816373 is about 11127.2805752349. The cubic root of 123816373 is about 498.4168230591.

The spelling of 123816373 in words is "one hundred twenty-three million, eight hundred sixteen thousand, three hundred seventy-three".