105315123 has 8 divisors (see below), whose sum is σ = 140928208. Its totient is φ = 69956064.

The previous prime is 105315121. The next prime is 105315139. The reversal of 105315123 is 321513501.

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

It is not a de Polignac number, because 105315123 - 2¹ = 105315121 is a prime.

It is a super-2 number, since 2×105315123² = 22182550265010258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105315123.

It is not an unprimeable number, because it can be changed into a prime (105315121) 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, 62536 + ... + 64197.

It is an arithmetic number, because the mean of its divisors is an integer number (17616026).

Almost surely, 2^105315123 is an apocalyptic number.

105315123 is a deficient number, since it is larger than the sum of its proper divisors (35613085).

105315123 is a wasteful number, since it uses less digits than its factorization.

105315123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127013.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 105315123 is about 10262.3156743495. The cubic root of 105315123 is about 472.2408802921.

Adding to 105315123 its reverse (321513501), we get a palindrome (426828624).

The spelling of 105315123 in words is "one hundred five million, three hundred fifteen thousand, one hundred twenty-three".