131316403 has 8 divisors (see below), whose sum is σ = 135896960. Its totient is φ = 126757440.

The previous prime is 131316397. The next prime is 131316421. The reversal of 131316403 is 304613131.

It is a happy number.

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 131316403 - 2⁵ = 131316371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131316473) 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, 7501 + ... + 17857.

It is an arithmetic number, because the mean of its divisors is an integer number (16987120).

Almost surely, 2^131316403 is an apocalyptic number.

131316403 is a deficient number, since it is larger than the sum of its proper divisors (4580557).

131316403 is a wasteful number, since it uses less digits than its factorization.

131316403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10797.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 131316403 is about 11459.3369354426. The cubic root of 131316403 is about 508.2838677896.

Adding to 131316403 its reverse (304613131), we get a palindrome (435929534).

The spelling of 131316403 in words is "one hundred thirty-one million, three hundred sixteen thousand, four hundred three".