218001531734023 has 2 divisors, whose sum is σ = 218001531734024. Its totient is φ = 218001531734022.

The previous prime is 218001531733981. The next prime is 218001531734053. The reversal of 218001531734023 is 320437135100812.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218001531734023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218001531734053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109000765867011 + 109000765867012.

It is an arithmetic number, because the mean of its divisors is an integer number (109000765867012).

Almost surely, 2^{218001531734023} is an apocalyptic number.

218001531734023 is a deficient number, since it is larger than the sum of its proper divisors (1).

218001531734023 is an equidigital number, since it uses as much as digits as its factorization.

218001531734023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

Adding to 218001531734023 its reverse (320437135100812), we get a palindrome (538438666834835).

The spelling of 218001531734023 in words is "two hundred eighteen trillion, one billion, five hundred thirty-one million, seven hundred thirty-four thousand, twenty-three".