131030403 has 16 divisors (see below), whose sum is σ = 210174720. Its totient is φ = 70933536.

The previous prime is 131030387. The next prime is 131030411. The reversal of 131030403 is 304030131.

It is not a de Polignac number, because 131030403 - 2⁴ = 131030387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131030443) 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 15 ways as a sum of consecutive naturals, for example, 163800 + ... + 164597.

It is an arithmetic number, because the mean of its divisors is an integer number (13135920).

Almost surely, 2^131030403 is an apocalyptic number.

131030403 is a deficient number, since it is larger than the sum of its proper divisors (79144317).

131030403 is a wasteful number, since it uses less digits than its factorization.

131030403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328426.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 131030403 is about 11446.8512264290. The cubic root of 131030403 is about 507.9145946800.

Adding to 131030403 its reverse (304030131), we get a palindrome (435060534).

It can be divided in two parts, 1310 and 30403, that added together give a palindrome (31713).

The spelling of 131030403 in words is "one hundred thirty-one million, thirty thousand, four hundred three".