231063442 has 4 divisors (see below), whose sum is σ = 346595166. Its totient is φ = 115531720.

The previous prime is 231063407. The next prime is 231063449. The reversal of 231063442 is 244360132.

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., 180069561 + 50993881 = 13419^2 + 7141^2 .

It is not an unprimeable number, because it can be changed into a prime (231063449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57765859 + ... + 57765862.

Almost surely, 2^231063442 is an apocalyptic number.

231063442 is a deficient number, since it is larger than the sum of its proper divisors (115531724).

231063442 is a wasteful number, since it uses less digits than its factorization.

231063442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115531723.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 231063442 is about 15200.7710988621. The cubic root of 231063442 is about 613.6354101009.

The spelling of 231063442 in words is "two hundred thirty-one million, sixty-three thousand, four hundred forty-two".