131640703 has 4 divisors (see below), whose sum is σ = 131808760. Its totient is φ = 131472648.

The previous prime is 131640671. The next prime is 131640727. The reversal of 131640703 is 307046131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307046131 = 7 ⋅43863733.

It is a cyclic number.

It is not a de Polignac number, because 131640703 - 2⁵ = 131640671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131640763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82848 + ... + 84421.

It is an arithmetic number, because the mean of its divisors is an integer number (32952190).

Almost surely, 2^131640703 is an apocalyptic number.

131640703 is a deficient number, since it is larger than the sum of its proper divisors (168057).

131640703 is an equidigital number, since it uses as much as digits as its factorization.

131640703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168056.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 131640703 is about 11473.4782433227. The cubic root of 131640703 is about 508.7019444011.

Adding to 131640703 its reverse (307046131), we get a palindrome (438686834).

The spelling of 131640703 in words is "one hundred thirty-one million, six hundred forty thousand, seven hundred three".