131603263 has 16 divisors (see below), whose sum is σ = 153305856. Its totient is φ = 111767040.

The previous prime is 131603261. The next prime is 131603279. The reversal of 131603263 is 362306131.

It is not a de Polignac number, because 131603263 - 2¹ = 131603261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131603261) 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, 4831 + ... + 16927.

It is an arithmetic number, because the mean of its divisors is an integer number (9581616).

Almost surely, 2^131603263 is an apocalyptic number.

131603263 is a deficient number, since it is larger than the sum of its proper divisors (21702593).

131603263 is a wasteful number, since it uses less digits than its factorization.

131603263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12174.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 131603263 is about 11471.8465383738. The cubic root of 131603263 is about 508.6537131012.

Adding to 131603263 its reverse (362306131), we get a palindrome (493909394).

The spelling of 131603263 in words is "one hundred thirty-one million, six hundred three thousand, two hundred sixty-three".