131725136 has 10 divisors (see below), whose sum is σ = 255217482. Its totient is φ = 65862560.

The previous prime is 131725133. The next prime is 131725147. The reversal of 131725136 is 631527131.

It can be written as a sum of positive squares in only one way, i.e., 130416400 + 1308736 = 11420^2 + 1144^2 .

It is a super-2 number, since 2×131725136² = 34703022908436992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131725099 and 131725108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131725133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4116395 + ... + 4116426.

Almost surely, 2^131725136 is an apocalyptic number.

131725136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131725136 is a deficient number, since it is larger than the sum of its proper divisors (123492346).

131725136 is an equidigital number, since it uses as much as digits as its factorization.

131725136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8232829 (or 8232823 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 131725136 is about 11477.1571392919. The cubic root of 131725136 is about 508.8106798979.

The spelling of 131725136 in words is "one hundred thirty-one million, seven hundred twenty-five thousand, one hundred thirty-six".