213623234411501 has 2 divisors, whose sum is σ = 213623234411502. Its totient is φ = 213623234411500.

The previous prime is 213623234411441. The next prime is 213623234411569. The reversal of 213623234411501 is 105114432326312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177460390673476 + 36162843738025 = 13321426^2 + 6013555^2 .

It is a cyclic number.

It is not a de Polignac number, because 213623234411501 - 2³⁰ = 213622160669677 is a prime.

It is a super-2 number, since 2×213623234411501² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213623234411201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106811617205750 + 106811617205751.

It is an arithmetic number, because the mean of its divisors is an integer number (106811617205751).

Almost surely, 2^{213623234411501} is an apocalyptic number.

It is an amenable number.

213623234411501 is a deficient number, since it is larger than the sum of its proper divisors (1).

213623234411501 is an equidigital number, since it uses as much as digits as its factorization.

213623234411501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 213623234411501 its reverse (105114432326312), we get a palindrome (318737666737813).

The spelling of 213623234411501 in words is "two hundred thirteen trillion, six hundred twenty-three billion, two hundred thirty-four million, four hundred eleven thousand, five hundred one".