213234362881 has 2 divisors, whose sum is σ = 213234362882. Its totient is φ = 213234362880.

The previous prime is 213234362863. The next prime is 213234362917. The reversal of 213234362881 is 188263432312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211959872881 + 1274490000 = 460391^2 + 35700^2 .

It is a cyclic number.

It is not a de Polignac number, because 213234362881 - 2¹³ = 213234354689 is a prime.

It is a super-2 number, since 2×213234362881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213234368881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106617181440 + 106617181441.

It is an arithmetic number, because the mean of its divisors is an integer number (106617181441).

Almost surely, 2^213234362881 is an apocalyptic number.

It is an amenable number.

213234362881 is a deficient number, since it is larger than the sum of its proper divisors (1).

213234362881 is an equidigital number, since it uses as much as digits as its factorization.

213234362881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 43.

The spelling of 213234362881 in words is "two hundred thirteen billion, two hundred thirty-four million, three hundred sixty-two thousand, eight hundred eighty-one".