105212315 has 16 divisors (see below), whose sum is σ = 136569888. Its totient is φ = 77350656.

The previous prime is 105212299. The next prime is 105212321. The reversal of 105212315 is 513212501.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 105212315 - 2⁴ = 105212299 is a prime.

It is a super-2 number, since 2×105212315² = 22139262455318450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11672 + ... + 18618.

It is an arithmetic number, because the mean of its divisors is an integer number (8535618).

Almost surely, 2^105212315 is an apocalyptic number.

105212315 is a deficient number, since it is larger than the sum of its proper divisors (31357573).

105212315 is a wasteful number, since it uses less digits than its factorization.

105212315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7198.

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

The square root of 105212315 is about 10257.3054453887. The cubic root of 105212315 is about 472.0871640112.

Adding to 105212315 its reverse (513212501), we get a palindrome (618424816).

The spelling of 105212315 in words is "one hundred five million, two hundred twelve thousand, three hundred fifteen".