131286485 has 32 divisors (see below), whose sum is σ = 183496320. Its totient is φ = 89164800.

The previous prime is 131286431. The next prime is 131286487. The reversal of 131286485 is 584682131.

It is not a de Polignac number, because 131286485 - 2¹⁶ = 131220949 is a prime.

It is a super-2 number, since 2×131286485² = 34472282287310450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131286487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75425 + ... + 77145.

It is an arithmetic number, because the mean of its divisors is an integer number (5734260).

Almost surely, 2^131286485 is an apocalyptic number.

It is an amenable number.

131286485 is a deficient number, since it is larger than the sum of its proper divisors (52209835).

131286485 is a wasteful number, since it uses less digits than its factorization.

131286485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its digits is 46080, while the sum is 38.

The square root of 131286485 is about 11458.0314626903. The cubic root of 131286485 is about 508.2452638493.

The spelling of 131286485 in words is "one hundred thirty-one million, two hundred eighty-six thousand, four hundred eighty-five".