10233331991 has 2 divisors, whose sum is σ = 10233331992. Its totient is φ = 10233331990.

The previous prime is 10233331987. The next prime is 10233332029. The reversal of 10233331991 is 19913333201.

It is a weak prime.

It is an emirp because it is prime and its reverse (19913333201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10233331991 - 2² = 10233331987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10233331921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5116665995 + 5116665996.

It is an arithmetic number, because the mean of its divisors is an integer number (5116665996).

Almost surely, 2^10233331991 is an apocalyptic number.

10233331991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10233331991 is an equidigital number, since it uses as much as digits as its factorization.

10233331991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 35.

The spelling of 10233331991 in words is "ten billion, two hundred thirty-three million, three hundred thirty-one thousand, nine hundred ninety-one".