231283357 has 2 divisors, whose sum is σ = 231283358. Its totient is φ = 231283356.

The previous prime is 231283309. The next prime is 231283387. The reversal of 231283357 is 753382132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229249881 + 2033476 = 15141^2 + 1426^2 .

It is a cyclic number.

It is not a de Polignac number, because 231283357 - 2⁷ = 231283229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231283387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115641678 + 115641679.

It is an arithmetic number, because the mean of its divisors is an integer number (115641679).

Almost surely, 2^231283357 is an apocalyptic number.

It is an amenable number.

231283357 is a deficient number, since it is larger than the sum of its proper divisors (1).

231283357 is an equidigital number, since it uses as much as digits as its factorization.

231283357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 231283357 is about 15208.0030576010. The cubic root of 231283357 is about 613.8300245330.

The spelling of 231283357 in words is "two hundred thirty-one million, two hundred eighty-three thousand, three hundred fifty-seven".