131292485 has 4 divisors (see below), whose sum is σ = 157550988. Its totient is φ = 105033984.

The previous prime is 131292481. The next prime is 131292509. The reversal of 131292485 is 584292131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584292131 = 2693 ⋅216967.

It can be written as a sum of positive squares in 2 ways, for example, as 101163364 + 30129121 = 10058^2 + 5489^2 .

It is a cyclic number.

It is not a de Polignac number, because 131292485 - 2² = 131292481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131292481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13129244 + ... + 13129253.

It is an arithmetic number, because the mean of its divisors is an integer number (39387747).

Almost surely, 2^131292485 is an apocalyptic number.

It is an amenable number.

131292485 is a deficient number, since it is larger than the sum of its proper divisors (26258503).

131292485 is an equidigital number, since it uses as much as digits as its factorization.

131292485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26258502.

The product of its digits is 17280, while the sum is 35.

The square root of 131292485 is about 11458.2932847785. The cubic root of 131292485 is about 508.2530062688.

The spelling of 131292485 in words is "one hundred thirty-one million, two hundred ninety-two thousand, four hundred eighty-five".