131224523 has 2 divisors, whose sum is σ = 131224524. Its totient is φ = 131224522.

The previous prime is 131224463. The next prime is 131224549. The reversal of 131224523 is 325422131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131224523 - 2²⁶ = 64115659 is a prime.

It is not a weakly prime, because it can be changed into another prime (131224823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65612261 + 65612262.

It is an arithmetic number, because the mean of its divisors is an integer number (65612262).

Almost surely, 2^131224523 is an apocalyptic number.

131224523 is a deficient number, since it is larger than the sum of its proper divisors (1).

131224523 is an equidigital number, since it uses as much as digits as its factorization.

131224523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 131224523 is about 11455.3272759882. The cubic root of 131224523 is about 508.1652940828.

Adding to 131224523 its reverse (325422131), we get a palindrome (456646654).

The spelling of 131224523 in words is "one hundred thirty-one million, two hundred twenty-four thousand, five hundred twenty-three".