131224007 has 2 divisors, whose sum is σ = 131224008. Its totient is φ = 131224006.

The previous prime is 131223991. The next prime is 131224021. The reversal of 131224007 is 700422131.

It is a strong prime.

It is an emirp because it is prime and its reverse (700422131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131224007 - 2⁴ = 131223991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131224007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131224057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65612003 + 65612004.

It is an arithmetic number, because the mean of its divisors is an integer number (65612004).

Almost surely, 2^131224007 is an apocalyptic number.

131224007 is a deficient number, since it is larger than the sum of its proper divisors (1).

131224007 is an equidigital number, since it uses as much as digits as its factorization.

131224007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 131224007 is about 11455.3047536938. The cubic root of 131224007 is about 508.1646280141.

Adding to 131224007 its reverse (700422131), we get a palindrome (831646138).

The spelling of 131224007 in words is "one hundred thirty-one million, two hundred twenty-four thousand, seven".