131510147 has 4 divisors (see below), whose sum is σ = 139246056. Its totient is φ = 123774240.

The previous prime is 131510143. The next prime is 131510149. The reversal of 131510147 is 741015131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741015131 = 359 ⋅2064109.

It is a cyclic number.

It is not a de Polignac number, because 131510147 - 2² = 131510143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131510143) 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 3 ways as a sum of consecutive naturals, for example, 3867929 + ... + 3867962.

It is an arithmetic number, because the mean of its divisors is an integer number (34811514).

Almost surely, 2^131510147 is an apocalyptic number.

131510147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131510147 is a deficient number, since it is larger than the sum of its proper divisors (7735909).

131510147 is an equidigital number, since it uses as much as digits as its factorization.

131510147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7735908.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 131510147 is about 11467.7873628700. The cubic root of 131510147 is about 508.5337186744.

Adding to 131510147 its reverse (741015131), we get a palindrome (872525278).

The spelling of 131510147 in words is "one hundred thirty-one million, five hundred ten thousand, one hundred forty-seven".