131324551 has 2 divisors, whose sum is σ = 131324552. Its totient is φ = 131324550.

The previous prime is 131324527. The next prime is 131324569. The reversal of 131324551 is 155423131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (155423131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131324551 - 2⁷ = 131324423 is a prime.

It is a super-2 number, since 2×131324551² = 34492275390703202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131322551) 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 as a sum of consecutive naturals, namely, 65662275 + 65662276.

It is an arithmetic number, because the mean of its divisors is an integer number (65662276).

Almost surely, 2^131324551 is an apocalyptic number.

131324551 is a deficient number, since it is larger than the sum of its proper divisors (1).

131324551 is an equidigital number, since it uses as much as digits as its factorization.

131324551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 131324551 is about 11459.6924478801. The cubic root of 131324551 is about 508.2943803410.

Adding to 131324551 its reverse (155423131), we get a palindrome (286747682).

The spelling of 131324551 in words is "one hundred thirty-one million, three hundred twenty-four thousand, five hundred fifty-one".