213330111331 has 2 divisors, whose sum is σ = 213330111332. Its totient is φ = 213330111330.

The previous prime is 213330111311. The next prime is 213330111347. The reversal of 213330111331 is 133111033312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213330111331 - 2²³ = 213321722723 is a prime.

It is a super-2 number, since 2×213330111331² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213330111311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106665055665 + 106665055666.

It is an arithmetic number, because the mean of its divisors is an integer number (106665055666).

Almost surely, 2^213330111331 is an apocalyptic number.

213330111331 is a deficient number, since it is larger than the sum of its proper divisors (1).

213330111331 is an equidigital number, since it uses as much as digits as its factorization.

213330111331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 213330111331 its reverse (133111033312), we get a palindrome (346441144643).

The spelling of 213330111331 in words is "two hundred thirteen billion, three hundred thirty million, one hundred eleven thousand, three hundred thirty-one".