131206753 has 4 divisors (see below), whose sum is σ = 131290308. Its totient is φ = 131123200.

The previous prime is 131206741. The next prime is 131206771. The reversal of 131206753 is 357602131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 357602131 = 223 ⋅1603597.

It can be written as a sum of positive squares in 2 ways, for example, as 95589729 + 35617024 = 9777^2 + 5968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131206753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131206253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39376 + ... + 42577.

It is an arithmetic number, because the mean of its divisors is an integer number (32822577).

Almost surely, 2^131206753 is an apocalyptic number.

It is an amenable number.

131206753 is a deficient number, since it is larger than the sum of its proper divisors (83555).

131206753 is an equidigital number, since it uses as much as digits as its factorization.

131206753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83554.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 131206753 is about 11454.5516280647. The cubic root of 131206753 is about 508.1423550144.

Adding to 131206753 its reverse (357602131), we get a palindrome (488808884).

The spelling of 131206753 in words is "one hundred thirty-one million, two hundred six thousand, seven hundred fifty-three".