103991368 has 16 divisors (see below), whose sum is σ = 209982780. Its totient is φ = 47995968.

The previous prime is 103991359. The next prime is 103991369. The reversal of 103991368 is 863199301.

It can be written as a sum of positive squares in 2 ways, for example, as 103184964 + 806404 = 10158^2 + 898^2 .

It is a super-2 number, since 2×103991368² = 21628409237022848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103991368.

It is not an unprimeable number, because it can be changed into a prime (103991369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499855 + ... + 500062.

Almost surely, 2^103991368 is an apocalyptic number.

It is an amenable number.

103991368 is an abundant number, since it is smaller than the sum of its proper divisors (105991412).

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

103991368 is a wasteful number, since it uses less digits than its factorization.

103991368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999936 (or 999932 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 103991368 is about 10197.6157997838. The cubic root of 103991368 is about 470.2539264656.

The spelling of 103991368 in words is "one hundred three million, nine hundred ninety-one thousand, three hundred sixty-eight".