20131130331223 has 2 divisors, whose sum is σ = 20131130331224. Its totient is φ = 20131130331222.

The previous prime is 20131130331187. The next prime is 20131130331229. The reversal of 20131130331223 is 32213303113102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20131130331223 - 2²⁹ = 20130593460311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20131130331229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065565165611 + 10065565165612.

It is an arithmetic number, because the mean of its divisors is an integer number (10065565165612).

Almost surely, 2^{20131130331223} is an apocalyptic number.

20131130331223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131130331223 is an equidigital number, since it uses as much as digits as its factorization.

20131130331223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20131130331223 its reverse (32213303113102), we get a palindrome (52344433444325).

The spelling of 20131130331223 in words is "twenty trillion, one hundred thirty-one billion, one hundred thirty million, three hundred thirty-one thousand, two hundred twenty-three".