10030309981 has 2 divisors, whose sum is σ = 10030309982. Its totient is φ = 10030309980.

The previous prime is 10030309979. The next prime is 10030310021. The reversal of 10030309981 is 18990303001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7061040900 + 2969269081 = 84030^2 + 54491^2 .

It is a cyclic number.

It is not a de Polignac number, because 10030309981 - 2¹ = 10030309979 is a prime.

It is a super-2 number, since 2×10030309981² (a number of 21 digits) contains 22 as substring.

Together with 10030309979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10030309901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015154990 + 5015154991.

It is an arithmetic number, because the mean of its divisors is an integer number (5015154991).

Almost surely, 2^10030309981 is an apocalyptic number.

It is an amenable number.

10030309981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10030309981 is an equidigital number, since it uses as much as digits as its factorization.

10030309981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 10030309981 in words is "ten billion, thirty million, three hundred nine thousand, nine hundred eighty-one".