131750138 has 16 divisors (see below), whose sum is σ = 218019816. Its totient is φ = 59324160.

The previous prime is 131750137. The next prime is 131750147. The reversal of 131750138 is 831057131.

131750138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 47789569 + 83960569 = 6913^2 + 9163^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131750138.

It is not an unprimeable number, because it can be changed into a prime (131750131) 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 in 7 ways as a sum of consecutive naturals, for example, 60731 + ... + 62862.

Almost surely, 2^131750138 is an apocalyptic number.

131750138 is a deficient number, since it is larger than the sum of its proper divisors (86269678).

131750138 is a wasteful number, since it uses less digits than its factorization.

131750138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123649.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 131750138 is about 11478.2462946218. The cubic root of 131750138 is about 508.8428693500.

The spelling of 131750138 in words is "one hundred thirty-one million, seven hundred fifty thousand, one hundred thirty-eight".