131330145 has 8 divisors (see below), whose sum is σ = 210128256. Its totient is φ = 70042736.

The previous prime is 131330137. The next prime is 131330149. The reversal of 131330145 is 541033131.

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 131330145 - 2³ = 131330137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131330149) 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, 4377657 + ... + 4377686.

It is an arithmetic number, because the mean of its divisors is an integer number (26266032).

Almost surely, 2^131330145 is an apocalyptic number.

131330145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131330145 is a deficient number, since it is larger than the sum of its proper divisors (78798111).

131330145 is an equidigital number, since it uses as much as digits as its factorization.

131330145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8755351.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 131330145 is about 11459.9365181488. The cubic root of 131330145 is about 508.3015974693.

Adding to 131330145 its reverse (541033131), we get a palindrome (672363276).

The spelling of 131330145 in words is "one hundred thirty-one million, three hundred thirty thousand, one hundred forty-five".