231427213 has 2 divisors, whose sum is σ = 231427214. Its totient is φ = 231427212.

The previous prime is 231427211. The next prime is 231427241. The reversal of 231427213 is 312724132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224940004 + 6487209 = 14998^2 + 2547^2 .

It is a cyclic number.

It is not a de Polignac number, because 231427213 - 2¹ = 231427211 is a prime.

Together with 231427211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231427211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115713606 + 115713607.

It is an arithmetic number, because the mean of its divisors is an integer number (115713607).

Almost surely, 2^231427213 is an apocalyptic number.

It is an amenable number.

231427213 is a deficient number, since it is larger than the sum of its proper divisors (1).

231427213 is an equidigital number, since it uses as much as digits as its factorization.

231427213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 231427213 is about 15212.7319374266. The cubic root of 231427213 is about 613.9572635924.

The spelling of 231427213 in words is "two hundred thirty-one million, four hundred twenty-seven thousand, two hundred thirteen".