131242356 has 72 divisors (see below), whose sum is σ = 393207360. Its totient is φ = 37495872.

The previous prime is 131242351. The next prime is 131242357. The reversal of 131242356 is 653242131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131242351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2841 + ... + 16448.

Almost surely, 2^131242356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131242356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196603680).

131242356 is an abundant number, since it is smaller than the sum of its proper divisors (261965004).

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

131242356 is a wasteful number, since it uses less digits than its factorization.

131242356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19315 (or 19301 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 131242356 is about 11456.1056210215. The cubic root of 131242356 is about 508.1883123953.

Adding to 131242356 its reverse (653242131), we get a palindrome (784484487).

The spelling of 131242356 in words is "one hundred thirty-one million, two hundred forty-two thousand, three hundred fifty-six".