131173203 has 16 divisors (see below), whose sum is σ = 202868480. Its totient is φ = 73836576.

The previous prime is 131173201. The next prime is 131173243. The reversal of 131173203 is 302371131.

It is not a de Polignac number, because 131173203 - 2¹ = 131173201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131173203.

It is not an unprimeable number, because it can be changed into a prime (131173201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45208 + ... + 48021.

It is an arithmetic number, because the mean of its divisors is an integer number (12679280).

Almost surely, 2^131173203 is an apocalyptic number.

131173203 is a deficient number, since it is larger than the sum of its proper divisors (71695277).

131173203 is an equidigital number, since it uses as much as digits as its factorization.

131173203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93306.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 131173203 is about 11453.0870510967. The cubic root of 131173203 is about 508.0990400963.

The spelling of 131173203 in words is "one hundred thirty-one million, one hundred seventy-three thousand, two hundred three".