123131203 has 12 divisors (see below), whose sum is σ = 133644168. Its totient is φ = 113393280.

The previous prime is 123131179. The next prime is 123131207. The reversal of 123131203 is 302131321.

It is not a de Polignac number, because 123131203 - 2²¹ = 121034051 is a prime.

It is a super-2 number, since 2×123131203² = 30322586304454418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123131207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139323 + ... + 140203.

It is an arithmetic number, because the mean of its divisors is an integer number (11137014).

Almost surely, 2^123131203 is an apocalyptic number.

123131203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123131203 is a deficient number, since it is larger than the sum of its proper divisors (10512965).

123131203 is an equidigital number, since it uses as much as digits as its factorization.

123131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734 (or 1721 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123131203 is about 11096.4500179111. The cubic root of 123131203 is about 497.4957490609.

Adding to 123131203 its reverse (302131321), we get a palindrome (425262524).

The spelling of 123131203 in words is "one hundred twenty-three million, one hundred thirty-one thousand, two hundred three".