131223147 has 8 divisors (see below), whose sum is σ = 190870080. Its totient is φ = 79529160.

The previous prime is 131223109. The next prime is 131223149. The reversal of 131223147 is 741322131.

It is a happy number.

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

It is not a de Polignac number, because 131223147 - 2⁷ = 131223019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131223149) 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, 1988197 + ... + 1988262.

It is an arithmetic number, because the mean of its divisors is an integer number (23858760).

Almost surely, 2^131223147 is an apocalyptic number.

131223147 is a deficient number, since it is larger than the sum of its proper divisors (59646933).

131223147 is a wasteful number, since it uses less digits than its factorization.

131223147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976473.

The product of its digits is 1008, while the sum is 24.

The square root of 131223147 is about 11455.2672164380. The cubic root of 131223147 is about 508.1635178958.

Adding to 131223147 its reverse (741322131), we get a palindrome (872545278).

The spelling of 131223147 in words is "one hundred thirty-one million, two hundred twenty-three thousand, one hundred forty-seven".