100316381 has 24 divisors (see below), whose sum is σ = 114915192. Its totient is φ = 87436800.

The previous prime is 100316357. The next prime is 100316383. The reversal of 100316381 is 183613001.

It can be written as a sum of positive squares in 4 ways, for example, as 116281 + 100200100 = 341^2 + 10010^2 .

It is not a de Polignac number, because 100316381 - 2¹⁰ = 100315357 is a prime.

It is a super-2 number, since 2×100316381² = 20126752593874322, 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 (100316383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 362015 + ... + 362291.

It is an arithmetic number, because the mean of its divisors is an integer number (4788133).

Almost surely, 2^100316381 is an apocalyptic number.

100316381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100316381 is a deficient number, since it is larger than the sum of its proper divisors (14598811).

100316381 is a wasteful number, since it uses less digits than its factorization.

100316381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 100316381 is about 10015.8065576368. The cubic root of 100316381 is about 464.6478715403.

Adding to 100316381 its reverse (183613001), we get a palindrome (283929382).

The spelling of 100316381 in words is "one hundred million, three hundred sixteen thousand, three hundred eighty-one".