131520147 has 32 divisors (see below), whose sum is σ = 205701120. Its totient is φ = 73890720.

The previous prime is 131520127. The next prime is 131520149. The reversal of 131520147 is 741025131.

It is not a de Polignac number, because 131520147 - 2¹⁴ = 131503763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131520149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27238 + ... + 31700.

It is an arithmetic number, because the mean of its divisors is an integer number (6428160).

Almost surely, 2^131520147 is an apocalyptic number.

131520147 is a deficient number, since it is larger than the sum of its proper divisors (74180973).

131520147 is a wasteful number, since it uses less digits than its factorization.

131520147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 131520147 is about 11468.2233584806. The cubic root of 131520147 is about 508.5466079417.

Adding to 131520147 its reverse (741025131), we get a palindrome (872545278).

The spelling of 131520147 in words is "one hundred thirty-one million, five hundred twenty thousand, one hundred forty-seven".