131357169 has 6 divisors (see below), whose sum is σ = 189738146. Its totient is φ = 87571440.

The previous prime is 131357143. The next prime is 131357179. The reversal of 131357169 is 961753131.

131357169 is a `hidden beast` number, since 13 + 13 + 571 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117939600 + 13417569 = 10860^2 + 3663^2 .

It is not a de Polignac number, because 131357169 - 2¹² = 131353073 is a prime.

It is a super-2 number, since 2×131357169² = 34509411695389122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131357129) 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, 7297612 + ... + 7297629.

Almost surely, 2^131357169 is an apocalyptic number.

It is an amenable number.

131357169 is a deficient number, since it is larger than the sum of its proper divisors (58380977).

131357169 is a wasteful number, since it uses less digits than its factorization.

131357169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14595247 (or 14595244 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 131357169 is about 11461.1155216235. The cubic root of 131357169 is about 508.3364597377.

The spelling of 131357169 in words is "one hundred thirty-one million, three hundred fifty-seven thousand, one hundred sixty-nine".