131403203 has 4 divisors (see below), whose sum is σ = 135642048. Its totient is φ = 127164360.

The previous prime is 131403143. The next prime is 131403253. The reversal of 131403203 is 302304131.

It is a happy number.

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 131403203 - 2¹⁰ = 131402179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131403253) 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, 2119376 + ... + 2119437.

It is an arithmetic number, because the mean of its divisors is an integer number (33910512).

Almost surely, 2^131403203 is an apocalyptic number.

131403203 is a deficient number, since it is larger than the sum of its proper divisors (4238845).

131403203 is an equidigital number, since it uses as much as digits as its factorization.

131403203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238844.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 131403203 is about 11463.1236144430. The cubic root of 131403203 is about 508.3958348184.

Adding to 131403203 its reverse (302304131), we get a palindrome (433707334).

The spelling of 131403203 in words is "one hundred thirty-one million, four hundred three thousand, two hundred three".