131678045 has 8 divisors (see below), whose sum is σ = 159258624. Its totient is φ = 104512464.

The previous prime is 131678033. The next prime is 131678047. The reversal of 131678045 is 540876131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131678045 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131677996 and 131678014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131678047) 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 7 ways as a sum of consecutive naturals, for example, 103049 + ... + 104318.

It is an arithmetic number, because the mean of its divisors is an integer number (19907328).

Almost surely, 2^131678045 is an apocalyptic number.

It is an amenable number.

131678045 is a deficient number, since it is larger than the sum of its proper divisors (27580579).

131678045 is a wasteful number, since it uses less digits than its factorization.

131678045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207499.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 131678045 is about 11475.1054461386. The cubic root of 131678045 is about 508.7500403464.

It can be divided in two parts, 13167 and 8045, that added together give a palindrome (21212).

The spelling of 131678045 in words is "one hundred thirty-one million, six hundred seventy-eight thousand, forty-five".