131503143 has 32 divisors (see below), whose sum is σ = 192132864. Its totient is φ = 79667712.

The previous prime is 131503117. The next prime is 131503181. The reversal of 131503143 is 341305131.

It is not a de Polignac number, because 131503143 - 2¹² = 131499047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131503343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428196 + ... + 428502.

It is an arithmetic number, because the mean of its divisors is an integer number (6004152).

Almost surely, 2^131503143 is an apocalyptic number.

131503143 is a deficient number, since it is larger than the sum of its proper divisors (60629721).

131503143 is a wasteful number, since it uses less digits than its factorization.

131503143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 131503143 is about 11467.4819816732. The cubic root of 131503143 is about 508.5246906426.

Adding to 131503143 its reverse (341305131), we get a palindrome (472808274).

The spelling of 131503143 in words is "one hundred thirty-one million, five hundred three thousand, one hundred forty-three".