131424401 has 2 divisors, whose sum is σ = 131424402. Its totient is φ = 131424400.

The previous prime is 131424389. The next prime is 131424409. The reversal of 131424401 is 104424131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115584001 + 15840400 = 10751^2 + 3980^2 .

It is a cyclic number.

It is not a de Polignac number, because 131424401 - 2¹⁰ = 131423377 is a prime.

It is not a weakly prime, because it can be changed into another prime (131424409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65712200 + 65712201.

It is an arithmetic number, because the mean of its divisors is an integer number (65712201).

Almost surely, 2^131424401 is an apocalyptic number.

It is an amenable number.

131424401 is a deficient number, since it is larger than the sum of its proper divisors (1).

131424401 is an equidigital number, since it uses as much as digits as its factorization.

131424401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 131424401 is about 11464.0481942462. The cubic root of 131424401 is about 508.4231715327.

Adding to 131424401 its reverse (104424131), we get a palindrome (235848532).

The spelling of 131424401 in words is "one hundred thirty-one million, four hundred twenty-four thousand, four hundred one".