131488145 has 8 divisors (see below), whose sum is σ = 158326056. Its totient is φ = 104830336.

The previous prime is 131488141. The next prime is 131488157. The reversal of 131488145 is 541884131.

It can be written as a sum of positive squares in 4 ways, for example, as 62995969 + 68492176 = 7937^2 + 8276^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131488145 - 2² = 131488141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131488141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43412 + ... + 46341.

It is an arithmetic number, because the mean of its divisors is an integer number (19790757).

Almost surely, 2^131488145 is an apocalyptic number.

It is an amenable number.

131488145 is a deficient number, since it is larger than the sum of its proper divisors (26837911).

131488145 is an equidigital number, since it uses as much as digits as its factorization.

131488145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90051.

The product of its digits is 15360, while the sum is 35.

The square root of 131488145 is about 11466.8280269654. The cubic root of 131488145 is about 508.5053574081.

The spelling of 131488145 in words is "one hundred thirty-one million, four hundred eighty-eight thousand, one hundred forty-five".