131436403 has 8 divisors (see below), whose sum is σ = 150661472. Its totient is φ = 112323456.

The previous prime is 131436397. The next prime is 131436419. The reversal of 131436403 is 304634131.

It is a happy number.

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

It is not a de Polignac number, because 131436403 - 2¹³ = 131428211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131436443) 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, 25500 + ... + 30217.

It is an arithmetic number, because the mean of its divisors is an integer number (18832684).

Almost surely, 2^131436403 is an apocalyptic number.

131436403 is a deficient number, since it is larger than the sum of its proper divisors (19225069).

131436403 is an equidigital number, since it uses as much as digits as its factorization.

131436403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56061.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 131436403 is about 11464.5716448544. The cubic root of 131436403 is about 508.4386478803.

The spelling of 131436403 in words is "one hundred thirty-one million, four hundred thirty-six thousand, four hundred three".