131003551 has 16 divisors (see below), whose sum is σ = 155271168. Its totient is φ = 108158400.

The previous prime is 131003501. The next prime is 131003557. The reversal of 131003551 is 155300131.

It is a de Polignac number, because none of the positive numbers 2^k-131003551 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 (131003557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49266 + ... + 51856.

It is an arithmetic number, because the mean of its divisors is an integer number (9704448).

Almost surely, 2^131003551 is an apocalyptic number.

131003551 is a deficient number, since it is larger than the sum of its proper divisors (24267617).

131003551 is a wasteful number, since it uses less digits than its factorization.

131003551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 131003551 is about 11445.6782673636. The cubic root of 131003551 is about 507.8798967418.

Adding to 131003551 its reverse (155300131), we get a palindrome (286303682).

The spelling of 131003551 in words is "one hundred thirty-one million, three thousand, five hundred fifty-one".