9720031 has 2 divisors, whose sum is σ = 9720032. Its totient is φ = 9720030.

The previous prime is 9719989. The next prime is 9720037. The reversal of 9720031 is 1300279.

9720031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9720031 - 2¹⁷ = 9588959 is a prime.

It is a super-2 number, since 2×9720031² = 188958005281922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9719984 and 9720011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9720037) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4860015 + 4860016.

It is an arithmetic number, because the mean of its divisors is an integer number (4860016).

Almost surely, 2^9720031 is an apocalyptic number.

9720031 is a deficient number, since it is larger than the sum of its proper divisors (1).

9720031 is an equidigital number, since it uses as much as digits as its factorization.

9720031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 9720031 is about 3117.6964252473. The cubic root of 9720031 is about 213.4138251492.

The spelling of 9720031 in words is "nine million, seven hundred twenty thousand, thirty-one".