105215383 has 16 divisors (see below), whose sum is σ = 133000000. Its totient is φ = 80994816.

The previous prime is 105215381. The next prime is 105215387. The reversal of 105215383 is 383512501.

It is not a de Polignac number, because 105215383 - 2¹ = 105215381 is a prime.

It is a super-2 number, since 2×105215383² = 22140553639673378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105215381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12258 + ... + 18991.

It is an arithmetic number, because the mean of its divisors is an integer number (8312500).

Almost surely, 2^105215383 is an apocalyptic number.

105215383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

105215383 is a deficient number, since it is larger than the sum of its proper divisors (27784617).

105215383 is a wasteful number, since it uses less digits than its factorization.

105215383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31306.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 105215383 is about 10257.4549962454. The cubic root of 105215383 is about 472.0917526671.

Adding to 105215383 its reverse (383512501), we get a palindrome (488727884).

The spelling of 105215383 in words is "one hundred five million, two hundred fifteen thousand, three hundred eighty-three".