100018312 has 8 divisors (see below), whose sum is σ = 187534350. Its totient is φ = 50009152.

The previous prime is 100018277. The next prime is 100018313. The reversal of 100018312 is 213810001.

It can be written as a sum of positive squares in only one way, i.e., 99720196 + 298116 = 9986^2 + 546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (100018313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251137 + ... + 6251152.

Almost surely, 2^100018312 is an apocalyptic number.

It is an amenable number.

100018312 is a deficient number, since it is larger than the sum of its proper divisors (87516038).

100018312 is a wasteful number, since it uses less digits than its factorization.

100018312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12502295 (or 12502291 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 100018312 is about 10000.9155580877. The cubic root of 100018312 is about 464.1872138903.

Adding to 100018312 its reverse (213810001), we get a palindrome (313828313).

The spelling of 100018312 in words is "one hundred million, eighteen thousand, three hundred twelve".