131144403 has 16 divisors (see below), whose sum is σ = 198222080. Its totient is φ = 76456224.

The previous prime is 131144401. The next prime is 131144417. The reversal of 131144403 is 304441131.

It is not a de Polignac number, because 131144403 - 2¹ = 131144401 is a prime.

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 131144403.

It is not an unprimeable number, because it can be changed into a prime (131144401) 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, 87751 + ... + 89232.

It is an arithmetic number, because the mean of its divisors is an integer number (12388880).

Almost surely, 2^131144403 is an apocalyptic number.

131144403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131144403 is a deficient number, since it is larger than the sum of its proper divisors (67077677).

131144403 is a wasteful number, since it uses less digits than its factorization.

131144403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177018.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 131144403 is about 11451.8296791386. The cubic root of 131144403 is about 508.0618518009.

Adding to 131144403 its reverse (304441131), we get a palindrome (435585534).

The spelling of 131144403 in words is "one hundred thirty-one million, one hundred forty-four thousand, four hundred three".