231364213 has 2 divisors, whose sum is σ = 231364214. Its totient is φ = 231364212.

The previous prime is 231364207. The next prime is 231364283. The reversal of 231364213 is 312463132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225991089 + 5373124 = 15033^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 231364213 - 2¹⁷ = 231233141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231364283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115682106 + 115682107.

It is an arithmetic number, because the mean of its divisors is an integer number (115682107).

Almost surely, 2^231364213 is an apocalyptic number.

It is an amenable number.

231364213 is a deficient number, since it is larger than the sum of its proper divisors (1).

231364213 is an equidigital number, since it uses as much as digits as its factorization.

231364213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

The square root of 231364213 is about 15210.6611624873. The cubic root of 231364213 is about 613.9015472724.

The spelling of 231364213 in words is "two hundred thirty-one million, three hundred sixty-four thousand, two hundred thirteen".