131340705 has 32 divisors (see below), whose sum is σ = 216568704. Its totient is φ = 67931136.

The previous prime is 131340697. The next prime is 131340709. The reversal of 131340705 is 507043131.

It is not a de Polignac number, because 131340705 - 2³ = 131340697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131340709) 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 31 ways as a sum of consecutive naturals, for example, 100617 + ... + 101913.

It is an arithmetic number, because the mean of its divisors is an integer number (6767772).

Almost surely, 2^131340705 is an apocalyptic number.

131340705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131340705 is a deficient number, since it is larger than the sum of its proper divisors (85227999).

131340705 is a wasteful number, since it uses less digits than its factorization.

131340705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 131340705 is about 11460.3972444239. The cubic root of 131340705 is about 508.3152209498.

Adding to 131340705 its reverse (507043131), we get a palindrome (638383836).

The spelling of 131340705 in words is "one hundred thirty-one million, three hundred forty thousand, seven hundred five".