131708345 has 8 divisors (see below), whose sum is σ = 162321864. Its totient is φ = 102518784.

The previous prime is 131708329. The next prime is 131708347. The reversal of 131708345 is 543807131.

It can be written as a sum of positive squares in 4 ways, for example, as 4108729 + 127599616 = 2027^2 + 11296^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131708345 - 2⁴ = 131708329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131708347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355784 + ... + 356153.

It is an arithmetic number, because the mean of its divisors is an integer number (20290233).

Almost surely, 2^131708345 is an apocalyptic number.

It is an amenable number.

131708345 is a deficient number, since it is larger than the sum of its proper divisors (30613519).

131708345 is an equidigital number, since it uses as much as digits as its factorization.

131708345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711979.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 131708345 is about 11476.4256195037. The cubic root of 131708345 is about 508.7890596174.

The spelling of 131708345 in words is "one hundred thirty-one million, seven hundred eight thousand, three hundred forty-five".