131679645 has 8 divisors (see below), whose sum is σ = 210687456. Its totient is φ = 70229136.

The previous prime is 131679643. The next prime is 131679673. The reversal of 131679645 is 546976131.

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

It is not a de Polignac number, because 131679645 - 2¹ = 131679643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131679597 and 131679606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131679643) 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, 4389307 + ... + 4389336.

It is an arithmetic number, because the mean of its divisors is an integer number (26335932).

Almost surely, 2^131679645 is an apocalyptic number.

131679645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131679645 is a deficient number, since it is larger than the sum of its proper divisors (79007811).

131679645 is an equidigital number, since it uses as much as digits as its factorization.

131679645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8778651.

The product of its digits is 136080, while the sum is 42.

The square root of 131679645 is about 11475.1751620618. The cubic root of 131679645 is about 508.7521009196.

The spelling of 131679645 in words is "one hundred thirty-one million, six hundred seventy-nine thousand, six hundred forty-five".