131242244 has 24 divisors (see below), whose sum is σ = 277925760. Its totient is φ = 52937856.

The previous prime is 131242229. The next prime is 131242249. The reversal of 131242244 is 442242131.

It is a super-2 number, since 2×131242244² = 34449053220311072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131242249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137384 + ... + 138335.

It is an arithmetic number, because the mean of its divisors is an integer number (11580240).

Almost surely, 2^131242244 is an apocalyptic number.

131242244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131242244 is an abundant number, since it is smaller than the sum of its proper divisors (146683516).

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

131242244 is a wasteful number, since it uses less digits than its factorization.

131242244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275747 (or 275745 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 131242244 is about 11456.1007327974. The cubic root of 131242244 is about 508.1881678355.

Adding to 131242244 its reverse (442242131), we get a palindrome (573484375).

The spelling of 131242244 in words is "one hundred thirty-one million, two hundred forty-two thousand, two hundred forty-four".