131671025 has 6 divisors (see below), whose sum is σ = 163272102. Its totient is φ = 105336800.

The previous prime is 131671009. The next prime is 131671037. The reversal of 131671025 is 520176131.

It can be written as a sum of positive squares in 3 ways, for example, as 9634816 + 122036209 = 3104^2 + 11047^2 .

It is not a de Polignac number, because 131671025 - 2⁴ = 131671009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131670985 and 131671003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2633396 + ... + 2633445.

It is an arithmetic number, because the mean of its divisors is an integer number (27212017).

Almost surely, 2^131671025 is an apocalyptic number.

It is an amenable number.

131671025 is a deficient number, since it is larger than the sum of its proper divisors (31601077).

131671025 is an equidigital number, since it uses as much as digits as its factorization.

131671025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5266851 (or 5266846 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 131671025 is about 11474.7995625196. The cubic root of 131671025 is about 508.7409993840.

The spelling of 131671025 in words is "one hundred thirty-one million, six hundred seventy-one thousand, twenty-five".