231145106 has 8 divisors (see below), whose sum is σ = 347700924. Its totient is φ = 115244800.

The previous prime is 231145097. The next prime is 231145111. The reversal of 231145106 is 601541132.

It can be written as a sum of positive squares in 2 ways, for example, as 224850025 + 6295081 = 14995^2 + 2509^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 162995 + ... + 164406.

Almost surely, 2^231145106 is an apocalyptic number.

231145106 is a deficient number, since it is larger than the sum of its proper divisors (116555818).

231145106 is a wasteful number, since it uses less digits than its factorization.

231145106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327756.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 231145106 is about 15203.4570410812. The cubic root of 231145106 is about 613.7076933076.

Adding to 231145106 its reverse (601541132), we get a palindrome (832686238).

The spelling of 231145106 in words is "two hundred thirty-one million, one hundred forty-five thousand, one hundred six".