106143231 has 4 divisors (see below), whose sum is σ = 141524312. Its totient is φ = 70762152.

The previous prime is 106143203. The next prime is 106143263. The reversal of 106143231 is 132341601.

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

It is not a de Polignac number, because 106143231 - 2¹³ = 106135039 is a prime.

It is a super-2 number, since 2×106143231² = 22532770974238722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106143198 and 106143207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106143731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17690536 + ... + 17690541.

It is an arithmetic number, because the mean of its divisors is an integer number (35381078).

Almost surely, 2^106143231 is an apocalyptic number.

106143231 is a deficient number, since it is larger than the sum of its proper divisors (35381081).

106143231 is an equidigital number, since it uses as much as digits as its factorization.

106143231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35381080.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 106143231 is about 10302.5837050713. The cubic root of 106143231 is about 473.4754161946.

Adding to 106143231 its reverse (132341601), we get a palindrome (238484832).

The spelling of 106143231 in words is "one hundred six million, one hundred forty-three thousand, two hundred thirty-one".