131748545 has 8 divisors (see below), whose sum is σ = 158218920. Its totient is φ = 105318400.

The previous prime is 131748503. The next prime is 131748559. The reversal of 131748545 is 545847131.

It can be written as a sum of positive squares in 4 ways, for example, as 4870849 + 126877696 = 2207^2 + 11264^2 .

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

It is not a de Polignac number, because 131748545 - 2⁸ = 131748289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131748499 and 131748508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2306 + ... + 16395.

It is an arithmetic number, because the mean of its divisors is an integer number (19777365).

Almost surely, 2^131748545 is an apocalyptic number.

It is an amenable number.

131748545 is a deficient number, since it is larger than the sum of its proper divisors (26470375).

131748545 is a wasteful number, since it uses less digits than its factorization.

131748545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20115.

The product of its digits is 67200, while the sum is 38.

The square root of 131748545 is about 11478.1769022785. The cubic root of 131748545 is about 508.8408185236.

The spelling of 131748545 in words is "one hundred thirty-one million, seven hundred forty-eight thousand, five hundred forty-five".