213330111131 has 2 divisors, whose sum is σ = 213330111132. Its totient is φ = 213330111130.

The previous prime is 213330111079. The next prime is 213330111133. The reversal of 213330111131 is 131111033312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213330111131 is a prime.

It is a super-2 number, since 2×213330111131² (a number of 23 digits) contains 22 as substring.

Together with 213330111133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213330111133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106665055565 + 106665055566.

It is an arithmetic number, because the mean of its divisors is an integer number (106665055566).

Almost surely, 2^213330111131 is an apocalyptic number.

213330111131 is a deficient number, since it is larger than the sum of its proper divisors (1).

213330111131 is an equidigital number, since it uses as much as digits as its factorization.

213330111131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 213330111131 its reverse (131111033312), we get a palindrome (344441144443).

The spelling of 213330111131 in words is "two hundred thirteen billion, three hundred thirty million, one hundred eleven thousand, one hundred thirty-one".