105280213 has 4 divisors (see below), whose sum is σ = 105310720. Its totient is φ = 105249708.

The previous prime is 105280171. The next prime is 105280277. The reversal of 105280213 is 312082501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312082501 = 769 ⋅405829.

It is a cyclic number.

It is not a de Polignac number, because 105280213 - 2¹³ = 105272021 is a prime.

It is a super-2 number, since 2×105280213² = 22167846498650738, 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 (105280613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9303 + ... + 17236.

It is an arithmetic number, because the mean of its divisors is an integer number (26327680).

Almost surely, 2^105280213 is an apocalyptic number.

It is an amenable number.

105280213 is a deficient number, since it is larger than the sum of its proper divisors (30507).

105280213 is an equidigital number, since it uses as much as digits as its factorization.

105280213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30506.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 105280213 is about 10260.6146502049. The cubic root of 105280213 is about 472.1886948428.

The spelling of 105280213 in words is "one hundred five million, two hundred eighty thousand, two hundred thirteen".