131223002243 has 2 divisors, whose sum is σ = 131223002244. Its totient is φ = 131223002242.

The previous prime is 131223002203. The next prime is 131223002249. The reversal of 131223002243 is 342200322131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131223002243 is a prime.

It is not a weakly prime, because it can be changed into another prime (131223002249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611501121 + 65611501122.

It is an arithmetic number, because the mean of its divisors is an integer number (65611501122).

Almost surely, 2^131223002243 is an apocalyptic number.

131223002243 is a deficient number, since it is larger than the sum of its proper divisors (1).

131223002243 is an equidigital number, since it uses as much as digits as its factorization.

131223002243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 131223002243 its reverse (342200322131), we get a palindrome (473423324374).

The spelling of 131223002243 in words is "one hundred thirty-one billion, two hundred twenty-three million, two thousand, two hundred forty-three".