105125231 has 4 divisors (see below), whose sum is σ = 105292464. Its totient is φ = 104958000.

The previous prime is 105125219. The next prime is 105125257. The reversal of 105125231 is 132521501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132521501 = 7 ⋅18931643.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105125231 is a prime.

It is a super-2 number, since 2×105125231² = 22102628385606722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105125291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82670 + ... + 83931.

It is an arithmetic number, because the mean of its divisors is an integer number (26323116).

Almost surely, 2^105125231 is an apocalyptic number.

105125231 is a deficient number, since it is larger than the sum of its proper divisors (167233).

105125231 is an equidigital number, since it uses as much as digits as its factorization.

105125231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167232.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 105125231 is about 10253.0595921413. The cubic root of 105125231 is about 471.9568795593.

Adding to 105125231 its reverse (132521501), we get a palindrome (237646732).

The spelling of 105125231 in words is "one hundred five million, one hundred twenty-five thousand, two hundred thirty-one".