131375122 has 4 divisors (see below), whose sum is σ = 197062686. Its totient is φ = 65687560.

The previous prime is 131375119. The next prime is 131375129. The reversal of 131375122 is 221573131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 109181601 + 22193521 = 10449^2 + 4711^2 .

It is not an unprimeable number, because it can be changed into a prime (131375129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32843779 + ... + 32843782.

Almost surely, 2^131375122 is an apocalyptic number.

131375122 is a deficient number, since it is larger than the sum of its proper divisors (65687564).

131375122 is an equidigital number, since it uses as much as digits as its factorization.

131375122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65687563.

The product of its digits is 1260, while the sum is 25.

The square root of 131375122 is about 11461.8987083293. The cubic root of 131375122 is about 508.3596173336.

The spelling of 131375122 in words is "one hundred thirty-one million, three hundred seventy-five thousand, one hundred twenty-two".