231102220213 has 2 divisors, whose sum is σ = 231102220214. Its totient is φ = 231102220212.

The previous prime is 231102220171. The next prime is 231102220309. The reversal of 231102220213 is 312022201132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228864646404 + 2237573809 = 478398^2 + 47303^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231102220213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231102220313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115551110106 + 115551110107.

It is an arithmetic number, because the mean of its divisors is an integer number (115551110107).

Almost surely, 2^231102220213 is an apocalyptic number.

It is an amenable number.

231102220213 is a deficient number, since it is larger than the sum of its proper divisors (1).

231102220213 is an equidigital number, since it uses as much as digits as its factorization.

231102220213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231102220213 its reverse (312022201132), we get a palindrome (543124421345).

The spelling of 231102220213 in words is "two hundred thirty-one billion, one hundred two million, two hundred twenty thousand, two hundred thirteen".