231323144047 has 2 divisors, whose sum is σ = 231323144048. Its totient is φ = 231323144046.

The previous prime is 231323144027. The next prime is 231323144053. The reversal of 231323144047 is 740441323132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231323144047 is a prime.

It is a super-2 number, since 2×231323144047² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231323144027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115661572023 + 115661572024.

It is an arithmetic number, because the mean of its divisors is an integer number (115661572024).

Almost surely, 2^231323144047 is an apocalyptic number.

231323144047 is a deficient number, since it is larger than the sum of its proper divisors (1).

231323144047 is an equidigital number, since it uses as much as digits as its factorization.

231323144047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 34.

Adding to 231323144047 its reverse (740441323132), we get a palindrome (971764467179).

The spelling of 231323144047 in words is "two hundred thirty-one billion, three hundred twenty-three million, one hundred forty-four thousand, forty-seven".