103721807 has 4 divisors (see below), whose sum is σ = 118539216. Its totient is φ = 88904400.

The previous prime is 103721801. The next prime is 103721837. The reversal of 103721807 is 708127301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708127301 = 7 ⋅101161043.

It is a cyclic number.

It is not a de Polignac number, because 103721807 - 2⁴ = 103721791 is a prime.

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 103721807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103721801) 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, 7408694 + ... + 7408707.

It is an arithmetic number, because the mean of its divisors is an integer number (29634804).

Almost surely, 2^103721807 is an apocalyptic number.

103721807 is a deficient number, since it is larger than the sum of its proper divisors (14817409).

103721807 is an equidigital number, since it uses as much as digits as its factorization.

103721807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14817408.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 103721807 is about 10184.3903597614. The cubic root of 103721807 is about 469.8472523097.

The spelling of 103721807 in words is "one hundred three million, seven hundred twenty-one thousand, eight hundred seven".