131243757 has 16 divisors (see below), whose sum is σ = 188327232. Its totient is φ = 80997120.

The previous prime is 131243729. The next prime is 131243767. The reversal of 131243757 is 757342131.

It is not a de Polignac number, because 131243757 - 2¹¹ = 131241709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131243767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17983 + ... + 24204.

It is an arithmetic number, because the mean of its divisors is an integer number (11770452).

Almost surely, 2^131243757 is an apocalyptic number.

131243757 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

131243757 is a deficient number, since it is larger than the sum of its proper divisors (57083475).

131243757 is a wasteful number, since it uses less digits than its factorization.

131243757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42268.

The product of its digits is 17640, while the sum is 33.

The square root of 131243757 is about 11456.1667672918. The cubic root of 131243757 is about 508.1901206765.

Adding to 131243757 its reverse (757342131), we get a palindrome (888585888).

The spelling of 131243757 in words is "one hundred thirty-one million, two hundred forty-three thousand, seven hundred fifty-seven".