131403443 has 8 divisors (see below), whose sum is σ = 133844400. Its totient is φ = 128969728.

The previous prime is 131403397. The next prime is 131403457. The reversal of 131403443 is 344304131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131403443 - 2¹⁰ = 131402419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131403473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46355 + ... + 49107.

It is an arithmetic number, because the mean of its divisors is an integer number (16730550).

Almost surely, 2^131403443 is an apocalyptic number.

131403443 is a deficient number, since it is larger than the sum of its proper divisors (2440957).

131403443 is an equidigital number, since it uses as much as digits as its factorization.

131403443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 131403443 is about 11463.1340827891. The cubic root of 131403443 is about 508.3961443363.

Adding to 131403443 its reverse (344304131), we get a palindrome (475707574).

The spelling of 131403443 in words is "one hundred thirty-one million, four hundred three thousand, four hundred forty-three".