213534240043 has 2 divisors, whose sum is σ = 213534240044. Its totient is φ = 213534240042.

The previous prime is 213534239969. The next prime is 213534240089. The reversal of 213534240043 is 340042435312.

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-213534240043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213534239987 and 213534240014.

It is not a weakly prime, because it can be changed into another prime (213534240643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106767120021 + 106767120022.

It is an arithmetic number, because the mean of its divisors is an integer number (106767120022).

Almost surely, 2^213534240043 is an apocalyptic number.

213534240043 is a deficient number, since it is larger than the sum of its proper divisors (1).

213534240043 is an equidigital number, since it uses as much as digits as its factorization.

213534240043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 213534240043 its reverse (340042435312), we get a palindrome (553576675355).

The spelling of 213534240043 in words is "two hundred thirteen billion, five hundred thirty-four million, two hundred forty thousand, forty-three".