231241357 has 2 divisors, whose sum is σ = 231241358. Its totient is φ = 231241356.

The previous prime is 231241349. The next prime is 231241397. The reversal of 231241357 is 753142132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117050761 + 114190596 = 10819^2 + 10686^2 .

It is a cyclic number.

It is not a de Polignac number, because 231241357 - 2³ = 231241349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231241337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115620678 + 115620679.

It is an arithmetic number, because the mean of its divisors is an integer number (115620679).

Almost surely, 2^231241357 is an apocalyptic number.

It is an amenable number.

231241357 is a deficient number, since it is larger than the sum of its proper divisors (1).

231241357 is an equidigital number, since it uses as much as digits as its factorization.

231241357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 231241357 is about 15206.6221430007. The cubic root of 231241357 is about 613.7928660418.

Adding to 231241357 its reverse (753142132), we get a palindrome (984383489).

The spelling of 231241357 in words is "two hundred thirty-one million, two hundred forty-one thousand, three hundred fifty-seven".