131542551 has 24 divisors (see below), whose sum is σ = 217451520. Its totient is φ = 75062736.

The previous prime is 131542513. The next prime is 131542597. The reversal of 131542551 is 155245131.

It is not a de Polignac number, because 131542551 - 2⁶ = 131542487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131542051) 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 23 ways as a sum of consecutive naturals, for example, 82306 + ... + 83888.

It is an arithmetic number, because the mean of its divisors is an integer number (9060480).

Almost surely, 2^131542551 is an apocalyptic number.

131542551 is a deficient number, since it is larger than the sum of its proper divisors (85908969).

131542551 is a wasteful number, since it uses less digits than its factorization.

131542551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915 (or 2912 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 131542551 is about 11469.2001028842. The cubic root of 131542551 is about 508.5754826847.

Adding to 131542551 its reverse (155245131), we get a palindrome (286787682).

It can be divided in two parts, 13 and 1542551, that added together give a square (1542564 = 1242²).

The spelling of 131542551 in words is "one hundred thirty-one million, five hundred forty-two thousand, five hundred fifty-one".