131001559 has 4 divisors (see below), whose sum is σ = 141078616. Its totient is φ = 120924504.

The previous prime is 131001557. The next prime is 131001569. The reversal of 131001559 is 955100131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131001559 - 2¹ = 131001557 is a prime.

It is a super-2 number, since 2×131001559² = 34322816920860962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001553) 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 3 ways as a sum of consecutive naturals, for example, 5038509 + ... + 5038534.

It is an arithmetic number, because the mean of its divisors is an integer number (35269654).

Almost surely, 2^131001559 is an apocalyptic number.

131001559 is a deficient number, since it is larger than the sum of its proper divisors (10077057).

131001559 is a wasteful number, since it uses less digits than its factorization.

131001559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10077056.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 131001559 is about 11445.5912472882. The cubic root of 131001559 is about 507.8773225066.

The spelling of 131001559 in words is "one hundred thirty-one million, one thousand, five hundred fifty-nine".