103720947 has 32 divisors (see below), whose sum is σ = 158754816. Its totient is φ = 59654400.

The previous prime is 103720937. The next prime is 103720949. The reversal of 103720947 is 749027301.

It is not a de Polignac number, because 103720947 - 2⁷ = 103720819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (103720949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53263 + ... + 55175.

It is an arithmetic number, because the mean of its divisors is an integer number (4961088).

Almost surely, 2^103720947 is an apocalyptic number.

103720947 is a deficient number, since it is larger than the sum of its proper divisors (55033869).

103720947 is a wasteful number, since it uses less digits than its factorization.

103720947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 103720947 is about 10184.3481381972. The cubic root of 103720947 is about 469.8459537408.

The spelling of 103720947 in words is "one hundred three million, seven hundred twenty thousand, nine hundred forty-seven".