103356721 has 8 divisors (see below), whose sum is σ = 111406400. Its totient is φ = 95321232.

The previous prime is 103356707. The next prime is 103356739. The reversal of 103356721 is 127653301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103356721 - 2⁷ = 103356593 is a prime.

It is a super-2 number, since 2×103356721² = 21365223551743682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103356721.

It is not an unprimeable number, because it can be changed into a prime (103356761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15346 + ... + 21028.

It is an arithmetic number, because the mean of its divisors is an integer number (13925800).

Almost surely, 2^103356721 is an apocalyptic number.

It is an amenable number.

103356721 is a deficient number, since it is larger than the sum of its proper divisors (8049679).

103356721 is a wasteful number, since it uses less digits than its factorization.

103356721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 103356721 is about 10166.4507572702. The cubic root of 103356721 is about 469.2953390956.

The spelling of 103356721 in words is "one hundred three million, three hundred fifty-six thousand, seven hundred twenty-one".