10237991 has 2 divisors, whose sum is σ = 10237992. Its totient is φ = 10237990.

The previous prime is 10237949. The next prime is 10237993. The reversal of 10237991 is 19973201.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19973201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10237991 is a prime.

Together with 10237993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10237993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5118995 + 5118996.

It is an arithmetic number, because the mean of its divisors is an integer number (5118996).

Almost surely, 2^10237991 is an apocalyptic number.

10237991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10237991 is an equidigital number, since it uses as much as digits as its factorization.

10237991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 10237991 is about 3199.6860783521. The cubic root of 10237991 is about 217.1392071879.

The spelling of 10237991 in words is "ten million, two hundred thirty-seven thousand, nine hundred ninety-one".