131115122 has 4 divisors (see below), whose sum is σ = 196672686. Its totient is φ = 65557560.

The previous prime is 131115109. The next prime is 131115139. The reversal of 131115122 is 221511131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221511131 = 569 ⋅389299.

It can be written as a sum of positive squares in only one way, i.e., 105904681 + 25210441 = 10291^2 + 5021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131115122.

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, 32778779 + ... + 32778782.

Almost surely, 2^131115122 is an apocalyptic number.

131115122 is a deficient number, since it is larger than the sum of its proper divisors (65557564).

131115122 is an equidigital number, since it uses as much as digits as its factorization.

131115122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65557563.

The product of its digits is 60, while the sum is 17.

The square root of 131115122 is about 11450.5511657736. The cubic root of 131115122 is about 508.0240368274.

Adding to 131115122 its reverse (221511131), we get a palindrome (352626253).

The spelling of 131115122 in words is "one hundred thirty-one million, one hundred fifteen thousand, one hundred twenty-two".