123340523503 has 8 divisors (see below), whose sum is σ = 124254214560. Its totient is φ = 122428917600.

The previous prime is 123340523447. The next prime is 123340523513. The reversal of 123340523503 is 305325043321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123340523503 - 2¹⁷ = 123340392431 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 (123340523513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402448 + ... + 639253.

It is an arithmetic number, because the mean of its divisors is an integer number (15531776820).

Almost surely, 2^123340523503 is an apocalyptic number.

123340523503 is a deficient number, since it is larger than the sum of its proper divisors (913691057).

123340523503 is a wasteful number, since it uses less digits than its factorization.

123340523503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042577.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 123340523503 its reverse (305325043321), we get a palindrome (428665566824).

The spelling of 123340523503 in words is "one hundred twenty-three billion, three hundred forty million, five hundred twenty-three thousand, five hundred three".