131583503 has 6 divisors (see below), whose sum is σ = 134444976. Its totient is φ = 128781692.

The previous prime is 131583497. The next prime is 131583509. The reversal of 131583503 is 305385131.

It is an interprime number because it is at equal distance from previous prime (131583497) and next prime (131583509).

It is a de Polignac number, because none of the positive numbers 2^k-131583503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131583509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27575 + ... + 31992.

It is an arithmetic number, because the mean of its divisors is an integer number (22407496).

Almost surely, 2^131583503 is an apocalyptic number.

131583503 is a deficient number, since it is larger than the sum of its proper divisors (2861473).

131583503 is an frugal number, since it uses more digits than its factorization.

131583503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59661 (or 59614 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 131583503 is about 11470.9852671861. The cubic root of 131583503 is about 508.6282540048.

It can be divided in two parts, 13158 and 3503, that added together give a palindrome (16661).

The spelling of 131583503 in words is "one hundred thirty-one million, five hundred eighty-three thousand, five hundred three".