131032403 has 4 divisors (see below), whose sum is σ = 136729488. Its totient is φ = 125335320.

The previous prime is 131032393. The next prime is 131032441. The reversal of 131032403 is 304230131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304230131 = 23 ⋅13227397.

It is a cyclic number.

It is not a de Polignac number, because 131032403 - 2⁴ = 131032387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131032903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2848508 + ... + 2848553.

It is an arithmetic number, because the mean of its divisors is an integer number (34182372).

Almost surely, 2^131032403 is an apocalyptic number.

131032403 is a deficient number, since it is larger than the sum of its proper divisors (5697085).

131032403 is an equidigital number, since it uses as much as digits as its factorization.

131032403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697084.

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

The square root of 131032403 is about 11446.9385863645. The cubic root of 131032403 is about 507.9171788741.

Adding to 131032403 its reverse (304230131), we get a palindrome (435262534).

The spelling of 131032403 in words is "one hundred thirty-one million, thirty-two thousand, four hundred three".