131028273 has 14 divisors (see below), whose sum is σ = 196453634. Its totient is φ = 87351696.

The previous prime is 131028239. The next prime is 131028277. The reversal of 131028273 is 372820131.

131028273 is a `hidden beast` number, since 1 + 310 + 282 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 123143409 + 7884864 = 11097^2 + 2808^2 .

It is not a de Polignac number, because 131028273 - 2⁹ = 131027761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131028277) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 89140 + ... + 90597.

Almost surely, 2^131028273 is an apocalyptic number.

It is an amenable number.

131028273 is a deficient number, since it is larger than the sum of its proper divisors (65425361).

131028273 is an frugal number, since it uses more digits than its factorization.

131028273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179755 (or 179740 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 131028273 is about 11446.7581873647. The cubic root of 131028273 is about 507.9118424842.

The spelling of 131028273 in words is "one hundred thirty-one million, twenty-eight thousand, two hundred seventy-three".