131242735 has 8 divisors (see below), whose sum is σ = 169606080. Its totient is φ = 96917664.

The previous prime is 131242723. The next prime is 131242739. The reversal of 131242735 is 537242131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131242735 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131242739) 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, 1009495 + ... + 1009624.

It is an arithmetic number, because the mean of its divisors is an integer number (21200760).

Almost surely, 2^131242735 is an apocalyptic number.

131242735 is a deficient number, since it is larger than the sum of its proper divisors (38363345).

131242735 is a wasteful number, since it uses less digits than its factorization.

131242735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019137.

The product of its digits is 5040, while the sum is 28.

The square root of 131242735 is about 11456.1221624073. The cubic root of 131242735 is about 508.1888015747.

Adding to 131242735 its reverse (537242131), we get a palindrome (668484866).

The spelling of 131242735 in words is "one hundred thirty-one million, two hundred forty-two thousand, seven hundred thirty-five".