131286146 has 8 divisors (see below), whose sum is σ = 197075964. Its totient is φ = 65594160.

The previous prime is 131286107. The next prime is 131286149. The reversal of 131286146 is 641682131.

It can be written as a sum of positive squares in 2 ways, for example, as 115326121 + 15960025 = 10739^2 + 3995^2 .

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

It is not an unprimeable number, because it can be changed into a prime (131286149) 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, 21005 + ... + 26528.

Almost surely, 2^131286146 is an apocalyptic number.

131286146 is a deficient number, since it is larger than the sum of its proper divisors (65789818).

131286146 is a wasteful number, since it uses less digits than its factorization.

131286146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48916.

The product of its digits is 6912, while the sum is 32.

The square root of 131286146 is about 11458.0166695637. The cubic root of 131286146 is about 508.2448263955.

The spelling of 131286146 in words is "one hundred thirty-one million, two hundred eighty-six thousand, one hundred forty-six".