131113242 has 60 divisors (see below), whose sum is σ = 318194910. Its totient is φ = 40334112.

The previous prime is 131113223. The next prime is 131113259. The reversal of 131113242 is 242311131.

It can be written as a sum of positive squares in 3 ways, for example, as 33281361 + 97831881 = 5769^2 + 9891^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 24984 + ... + 29772.

Almost surely, 2^131113242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131113242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159097455).

131113242 is an abundant number, since it is smaller than the sum of its proper divisors (187081668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131113242 is a wasteful number, since it uses less digits than its factorization.

131113242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829 (or 4807 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 131113242 is about 11450.4690733611. The cubic root of 131113242 is about 508.0216087074.

Adding to 131113242 its reverse (242311131), we get a palindrome (373424373).

The spelling of 131113242 in words is "one hundred thirty-one million, one hundred thirteen thousand, two hundred forty-two".