123357503 has 4 divisors (see below), whose sum is σ = 127611240. Its totient is φ = 119103768.

The previous prime is 123357499. The next prime is 123357511. The reversal of 123357503 is 305753321.

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

It is a cyclic number.

It is not a de Polignac number, because 123357503 - 2² = 123357499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 4253707 = 123357503 / (1 + 2 + 3 + 3 + 5 + 7 + 5 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123357523) 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, 2126825 + ... + 2126882.

It is an arithmetic number, because the mean of its divisors is an integer number (31902810).

Almost surely, 2^123357503 is an apocalyptic number.

123357503 is a deficient number, since it is larger than the sum of its proper divisors (4253737).

123357503 is an equidigital number, since it uses as much as digits as its factorization.

123357503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253736.

The product of its (nonzero) digits is 9450, while the sum is 29.

The square root of 123357503 is about 11106.6422918900. The cubic root of 123357503 is about 497.8003411930.

The spelling of 123357503 in words is "one hundred twenty-three million, three hundred fifty-seven thousand, five hundred three".