131071693 has 4 divisors (see below), whose sum is σ = 131796028. Its totient is φ = 130347360.

The previous prime is 131071679. The next prime is 131071727. The reversal of 131071693 is 396170131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32228329 + 98843364 = 5677^2 + 9942^2 .

It is a cyclic number.

It is not a de Polignac number, because 131071693 - 2²¹ = 128974541 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 (131071613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361896 + ... + 362257.

It is an arithmetic number, because the mean of its divisors is an integer number (32949007).

Almost surely, 2^131071693 is an apocalyptic number.

It is an amenable number.

131071693 is a deficient number, since it is larger than the sum of its proper divisors (724335).

131071693 is an equidigital number, since it uses as much as digits as its factorization.

131071693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724334.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 131071693 is about 11448.6546371178. The cubic root of 131071693 is about 507.9679400376.

The spelling of 131071693 in words is "one hundred thirty-one million, seventy-one thousand, six hundred ninety-three".