131731874 has 4 divisors (see below), whose sum is σ = 197597814. Its totient is φ = 65865936.

The previous prime is 131731813. The next prime is 131731889. The reversal of 131731874 is 478137131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 478137131 = 101 ⋅4734031.

It can be written as a sum of positive squares in only one way, i.e., 127351225 + 4380649 = 11285^2 + 2093^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32932967 + ... + 32932970.

Almost surely, 2^131731874 is an apocalyptic number.

131731874 is a deficient number, since it is larger than the sum of its proper divisors (65865940).

131731874 is an equidigital number, since it uses as much as digits as its factorization.

131731874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65865939.

The product of its digits is 14112, while the sum is 35.

The square root of 131731874 is about 11477.4506751282. The cubic root of 131731874 is about 508.8193553059.

The spelling of 131731874 in words is "one hundred thirty-one million, seven hundred thirty-one thousand, eight hundred seventy-four".