105423251 has 4 divisors (see below), whose sum is σ = 105463992. Its totient is φ = 105382512.

The previous prime is 105423247. The next prime is 105423257. The reversal of 105423251 is 152324501.

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

It is a cyclic number.

It is not a de Polignac number, because 105423251 - 2² = 105423247 is a prime.

It is a super-2 number, since 2×105423251² = 22228123702818002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105423257) 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 3 ways as a sum of consecutive naturals, for example, 16205 + ... + 21758.

It is an arithmetic number, because the mean of its divisors is an integer number (26365998).

Almost surely, 2^105423251 is an apocalyptic number.

105423251 is a deficient number, since it is larger than the sum of its proper divisors (40741).

105423251 is an equidigital number, since it uses as much as digits as its factorization.

105423251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40740.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 105423251 is about 10267.5825294954. The cubic root of 105423251 is about 472.4024430224.

Adding to 105423251 its reverse (152324501), we get a palindrome (257747752).

The spelling of 105423251 in words is "one hundred five million, four hundred twenty-three thousand, two hundred fifty-one".