23181208747 has 2 divisors, whose sum is σ = 23181208748. Its totient is φ = 23181208746.

The previous prime is 23181208703. The next prime is 23181208753. The reversal of 23181208747 is 74780218132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23181208747 is a prime.

It is not a weakly prime, because it can be changed into another prime (23181202747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11590604373 + 11590604374.

It is an arithmetic number, because the mean of its divisors is an integer number (11590604374).

Almost surely, 2^23181208747 is an apocalyptic number.

23181208747 is a deficient number, since it is larger than the sum of its proper divisors (1).

23181208747 is an equidigital number, since it uses as much as digits as its factorization.

23181208747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 23181208747 in words is "twenty-three billion, one hundred eighty-one million, two hundred eight thousand, seven hundred forty-seven".