100518312 has 32 divisors (see below), whose sum is σ = 254328480. Its totient is φ = 33101760.

The previous prime is 100518281. The next prime is 100518317. The reversal of 100518312 is 213815001.

It is not an unprimeable number, because it can be changed into a prime (100518317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23239 + ... + 27222.

It is an arithmetic number, because the mean of its divisors is an integer number (7947765).

Almost surely, 2^100518312 is an apocalyptic number.

100518312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100518312 is an abundant number, since it is smaller than the sum of its proper divisors (153810168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100518312 is a wasteful number, since it uses less digits than its factorization.

100518312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50553 (or 50549 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 100518312 is about 10025.8821058299. The cubic root of 100518312 is about 464.9594322338.

The spelling of 100518312 in words is "one hundred million, five hundred eighteen thousand, three hundred twelve".