131250545 has 8 divisors (see below), whose sum is σ = 157907880. Its totient is φ = 104728960.

The previous prime is 131250541. The next prime is 131250547. The reversal of 131250545 is 545052131.

It can be written as a sum of positive squares in 4 ways, for example, as 29986576 + 101263969 = 5476^2 + 10063^2 .

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

It is not a de Polignac number, because 131250545 - 2² = 131250541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131250541) 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, 31796 + ... + 35685.

It is an arithmetic number, because the mean of its divisors is an integer number (19738485).

Almost surely, 2^131250545 is an apocalyptic number.

It is an amenable number.

131250545 is a deficient number, since it is larger than the sum of its proper divisors (26657335).

131250545 is an equidigital number, since it uses as much as digits as its factorization.

131250545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67875.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 131250545 is about 11456.4630231149. The cubic root of 131250545 is about 508.1988818173.

The spelling of 131250545 in words is "one hundred thirty-one million, two hundred fifty thousand, five hundred forty-five".