131544001 has 2 divisors, whose sum is σ = 131544002. Its totient is φ = 131544000.

The previous prime is 131543989. The next prime is 131544013. The reversal of 131544001 is 100445131.

It is a balanced prime because it is at equal distance from previous prime (131543989) and next prime (131544013).

It can be written as a sum of positive squares in only one way, i.e., 67223601 + 64320400 = 8199^2 + 8020^2 .

It is an emirp because it is prime and its reverse (100445131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131544001 - 2⁷ = 131543873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131544001.

It is not a weakly prime, because it can be changed into another prime (131544041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65772000 + 65772001.

It is an arithmetic number, because the mean of its divisors is an integer number (65772001).

Almost surely, 2^131544001 is an apocalyptic number.

It is an amenable number.

131544001 is a deficient number, since it is larger than the sum of its proper divisors (1).

131544001 is an equidigital number, since it uses as much as digits as its factorization.

131544001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 131544001 is about 11469.2633154881. The cubic root of 131544001 is about 508.5773513620.

Adding to 131544001 its reverse (100445131), we get a palindrome (231989132).

The spelling of 131544001 in words is "one hundred thirty-one million, five hundred forty-four thousand, one".