10230991931 has 2 divisors, whose sum is σ = 10230991932. Its totient is φ = 10230991930.

The previous prime is 10230991909. The next prime is 10230991943. The reversal of 10230991931 is 13919903201.

It is a strong prime.

It is an emirp because it is prime and its reverse (13919903201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10230991931 - 2¹⁸ = 10230729787 is a prime.

It is a super-2 number, since 2×10230991931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10230991231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5115495965 + 5115495966.

It is an arithmetic number, because the mean of its divisors is an integer number (5115495966).

Almost surely, 2^10230991931 is an apocalyptic number.

10230991931 is a deficient number, since it is larger than the sum of its proper divisors (1).

10230991931 is an equidigital number, since it uses as much as digits as its factorization.

10230991931 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 38.

The spelling of 10230991931 in words is "ten billion, two hundred thirty million, nine hundred ninety-one thousand, nine hundred thirty-one".