9431320013 has 2 divisors, whose sum is σ = 9431320014. Its totient is φ = 9431320012.

The previous prime is 9431320007. The next prime is 9431320021. The reversal of 9431320013 is 3100231349.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8660535844 + 770784169 = 93062^2 + 27763^2 .

It is a cyclic number.

It is not a de Polignac number, because 9431320013 - 2¹⁰ = 9431318989 is a prime.

It is a super-2 number, since 2×9431320013² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9431320033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4715660006 + 4715660007.

It is an arithmetic number, because the mean of its divisors is an integer number (4715660007).

Almost surely, 2^9431320013 is an apocalyptic number.

It is an amenable number.

9431320013 is a deficient number, since it is larger than the sum of its proper divisors (1).

9431320013 is an equidigital number, since it uses as much as digits as its factorization.

9431320013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 9431320013 is about 97114.9834629034. The cubic root of 9431320013 is about 2112.7956483523.

The spelling of 9431320013 in words is "nine billion, four hundred thirty-one million, three hundred twenty thousand, thirteen".