131725431 has 12 divisors (see below), whose sum is σ = 191126208. Its totient is φ = 87421824.

The previous prime is 131725421. The next prime is 131725441. The reversal of 131725431 is 134527131.

It is an interprime number because it is at equal distance from previous prime (131725421) and next prime (131725441).

It is not a de Polignac number, because 131725431 - 2¹⁰ = 131724407 is a prime.

It is a super-2 number, since 2×131725431² = 34703178344271522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131725395 and 131725404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131725421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30810 + ... + 34823.

It is an arithmetic number, because the mean of its divisors is an integer number (15927184).

Almost surely, 2^131725431 is an apocalyptic number.

131725431 is a deficient number, since it is larger than the sum of its proper divisors (59400777).

131725431 is a wasteful number, since it uses less digits than its factorization.

131725431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65862 (or 65859 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 131725431 is about 11477.1699908993. The cubic root of 131725431 is about 508.8110597268.

The spelling of 131725431 in words is "one hundred thirty-one million, seven hundred twenty-five thousand, four hundred thirty-one".