105214387 has 4 divisors (see below), whose sum is σ = 105416856. Its totient is φ = 105011920.

The previous prime is 105214379. The next prime is 105214399. The reversal of 105214387 is 783412501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783412501 = 31 ⋅25271371.

It is a cyclic number.

It is not a de Polignac number, because 105214387 - 2³ = 105214379 is a prime.

It is a super-2 number, since 2×105214387² = 22140134463571538, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105214327) 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, 100453 + ... + 101494.

It is an arithmetic number, because the mean of its divisors is an integer number (26354214).

Almost surely, 2^105214387 is an apocalyptic number.

105214387 is a deficient number, since it is larger than the sum of its proper divisors (202469).

105214387 is an equidigital number, since it uses as much as digits as its factorization.

105214387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202468.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 105214387 is about 10257.4064460759. The cubic root of 105214387 is about 472.0902630089.

Adding to 105214387 its reverse (783412501), we get a palindrome (888626888).

The spelling of 105214387 in words is "one hundred five million, two hundred fourteen thousand, three hundred eighty-seven".