105423431 has 8 divisors (see below), whose sum is σ = 106114560. Its totient is φ = 104735232.

The previous prime is 105423403. The next prime is 105423449. The reversal of 105423431 is 134324501.

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

It is a cyclic number.

It is not a de Polignac number, because 105423431 - 2²² = 101229127 is a prime.

It is a super-2 number, since 2×105423431² = 22228199607623522, 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 = 105423397 and 105423406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105423481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156311 + ... + 156983.

It is an arithmetic number, because the mean of its divisors is an integer number (13264320).

Almost surely, 2^105423431 is an apocalyptic number.

105423431 is a deficient number, since it is larger than the sum of its proper divisors (691129).

105423431 is an equidigital number, since it uses as much as digits as its factorization.

105423431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 105423431 is about 10267.5912949435. The cubic root of 105423431 is about 472.4027118827.

Adding to 105423431 its reverse (134324501), we get a palindrome (239747932).

The spelling of 105423431 in words is "one hundred five million, four hundred twenty-three thousand, four hundred thirty-one".