231303434 has 4 divisors (see below), whose sum is σ = 346955154. Its totient is φ = 115651716.

The previous prime is 231303419. The next prime is 231303439. The reversal of 231303434 is 434303132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 231131209 + 172225 = 15203^2 + 415^2 .

It is not an unprimeable number, because it can be changed into a prime (231303439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57825857 + ... + 57825860.

Almost surely, 2^231303434 is an apocalyptic number.

231303434 is a deficient number, since it is larger than the sum of its proper divisors (115651720).

231303434 is a wasteful number, since it uses less digits than its factorization.

231303434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115651719.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 231303434 is about 15208.6631233649. The cubic root of 231303434 is about 613.8477855873.

Adding to 231303434 its reverse (434303132), we get a palindrome (665606566).

The spelling of 231303434 in words is "two hundred thirty-one million, three hundred three thousand, four hundred thirty-four".