100031216 has 40 divisors (see below), whose sum is σ = 198950064. Its totient is φ = 48706560.

The previous prime is 100031189. The next prime is 100031263. The reversal of 100031216 is 612130001.

It is a self number, because there is not a number n which added to its sum of digits gives 100031216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109835 + ... + 110741.

Almost surely, 2^100031216 is an apocalyptic number.

100031216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

100031216 is a deficient number, since it is larger than the sum of its proper divisors (98918848).

100031216 is a wasteful number, since it uses less digits than its factorization.

100031216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1083 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 100031216 is about 10001.5606782142. The cubic root of 100031216 is about 464.2071756157.

Adding to 100031216 its reverse (612130001), we get a palindrome (712161217).

The spelling of 100031216 in words is "one hundred million, thirty-one thousand, two hundred sixteen".