131243203 has 24 divisors (see below), whose sum is σ = 170995200. Its totient is φ = 98358624.

The previous prime is 131243191. The next prime is 131243209. The reversal of 131243203 is 302342131.

It is not a de Polignac number, because 131243203 - 2⁵ = 131243171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131243209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19558 + ... + 25396.

It is an arithmetic number, because the mean of its divisors is an integer number (7124800).

Almost surely, 2^131243203 is an apocalyptic number.

131243203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131243203 is a deficient number, since it is larger than the sum of its proper divisors (39751997).

131243203 is a wasteful number, since it uses less digits than its factorization.

131243203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891 (or 5878 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 131243203 is about 11456.1425881489. The cubic root of 131243203 is about 508.1894056261.

Adding to 131243203 its reverse (302342131), we get a palindrome (433585334).

The spelling of 131243203 in words is "one hundred thirty-one million, two hundred forty-three thousand, two hundred three".