231032642 has 4 divisors (see below), whose sum is σ = 346548966. Its totient is φ = 115516320.

The previous prime is 231032639. The next prime is 231032653. The reversal of 231032642 is 246230132.

231032642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 211149961 + 19882681 = 14531^2 + 4459^2 .

It is an unprimeable number.

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, 57758159 + ... + 57758162.

Almost surely, 2^231032642 is an apocalyptic number.

231032642 is a deficient number, since it is larger than the sum of its proper divisors (115516324).

231032642 is a wasteful number, since it uses less digits than its factorization.

231032642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115516323.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 231032642 is about 15199.7579585992. The cubic root of 231032642 is about 613.6081436926.

Adding to 231032642 its reverse (246230132), we get a palindrome (477262774).

The spelling of 231032642 in words is "two hundred thirty-one million, thirty-two thousand, six hundred forty-two".