131025277 has 6 divisors (see below), whose sum is σ = 135700058. Its totient is φ = 126506352.

The previous prime is 131025259. The next prime is 131025281. The reversal of 131025277 is 772520131.

It can be written as a sum of positive squares in 3 ways, for example, as 50851161 + 80174116 = 7131^2 + 8954^2 .

It is not a de Polignac number, because 131025277 - 2⁷ = 131025149 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 (131025247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77058 + ... + 78739.

Almost surely, 2^131025277 is an apocalyptic number.

It is an amenable number.

131025277 is a deficient number, since it is larger than the sum of its proper divisors (4674781).

131025277 is an equidigital number, since it uses as much as digits as its factorization.

131025277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155855 (or 155826 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 131025277 is about 11446.6273198703. The cubic root of 131025277 is about 507.9079712702.

The spelling of 131025277 in words is "one hundred thirty-one million, twenty-five thousand, two hundred seventy-seven".