103991224 has 8 divisors (see below), whose sum is σ = 194983560. Its totient is φ = 51995608.

The previous prime is 103991221. The next prime is 103991233. The reversal of 103991224 is 422199301.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103991221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499444 + ... + 6499459.

It is an arithmetic number, because the mean of its divisors is an integer number (24372945).

Almost surely, 2^103991224 is an apocalyptic number.

It is an amenable number.

103991224 is a deficient number, since it is larger than the sum of its proper divisors (90992336).

103991224 is a wasteful number, since it uses less digits than its factorization.

103991224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12998909 (or 12998905 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 103991224 is about 10197.6087393075. The cubic root of 103991224 is about 470.2537094072.

The spelling of 103991224 in words is "one hundred three million, nine hundred ninety-one thousand, two hundred twenty-four".