231220046 has 8 divisors (see below), whose sum is σ = 347521104. Its totient is φ = 115379680.

The previous prime is 231220027. The next prime is 231220057. The reversal of 231220046 is 640022132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 113915 + ... + 115926.

It is an arithmetic number, because the mean of its divisors is an integer number (43440138).

Almost surely, 2^231220046 is an apocalyptic number.

231220046 is a deficient number, since it is larger than the sum of its proper divisors (116301058).

231220046 is a wasteful number, since it uses less digits than its factorization.

231220046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230346.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231220046 is about 15205.9214123972. The cubic root of 231220046 is about 613.7740099257.

Adding to 231220046 its reverse (640022132), we get a palindrome (871242178).

The spelling of 231220046 in words is "two hundred thirty-one million, two hundred twenty thousand, forty-six".