231030313 has 2 divisors, whose sum is σ = 231030314. Its totient is φ = 231030312.

The previous prime is 231030299. The next prime is 231030337. The reversal of 231030313 is 313030132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229583104 + 1447209 = 15152^2 + 1203^2 .

It is a cyclic number.

It is not a de Polignac number, because 231030313 - 2⁵ = 231030281 is a prime.

It is not a weakly prime, because it can be changed into another prime (231030413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115515156 + 115515157.

It is an arithmetic number, because the mean of its divisors is an integer number (115515157).

Almost surely, 2^231030313 is an apocalyptic number.

It is an amenable number.

231030313 is a deficient number, since it is larger than the sum of its proper divisors (1).

231030313 is an equidigital number, since it uses as much as digits as its factorization.

231030313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 231030313 is about 15199.6813453441. The cubic root of 231030313 is about 613.6060817932.

Adding to 231030313 its reverse (313030132), we get a palindrome (544060445).

It can be divided in two parts, 2310 and 30313, that added together give a palindrome (32623).

The spelling of 231030313 in words is "two hundred thirty-one million, thirty thousand, three hundred thirteen".