10020030991 has 2 divisors, whose sum is σ = 10020030992. Its totient is φ = 10020030990.

The previous prime is 10020030989. The next prime is 10020030997. The reversal of 10020030991 is 19903002001.

10020030991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10020030991 - 2¹ = 10020030989 is a prime.

Together with 10020030989, 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 (10020030997) 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 as a sum of consecutive naturals, namely, 5010015495 + 5010015496.

It is an arithmetic number, because the mean of its divisors is an integer number (5010015496).

Almost surely, 2^10020030991 is an apocalyptic number.

10020030991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020030991 is an equidigital number, since it uses as much as digits as its factorization.

10020030991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

Adding to 10020030991 its reverse (19903002001), we get a palindrome (29923032992).

It can be divided in two parts, 100200309 and 91, that multiplied together give a palindrome (9118228119).

The spelling of 10020030991 in words is "ten billion, twenty million, thirty thousand, nine hundred ninety-one".