105423231 has 8 divisors (see below), whose sum is σ = 140848000. Its totient is φ = 70140312.

The previous prime is 105423223. The next prime is 105423233. The reversal of 105423231 is 132324501.

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

It is not a de Polignac number, because 105423231 - 2³ = 105423223 is a prime.

It is a super-2 number, since 2×105423231² = 22228115268958722, 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 = 105423198 and 105423207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105423233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33715 + ... + 36708.

It is an arithmetic number, because the mean of its divisors is an integer number (17606000).

Almost surely, 2^105423231 is an apocalyptic number.

105423231 is a deficient number, since it is larger than the sum of its proper divisors (35424769).

105423231 is an equidigital number, since it uses as much as digits as its factorization.

105423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70925.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 105423231 is about 10267.5815555563. The cubic root of 105423231 is about 472.4024131490.

Adding to 105423231 its reverse (132324501), we get a palindrome (237747732).

The spelling of 105423231 in words is "one hundred five million, four hundred twenty-three thousand, two hundred thirty-one".