10040032391 has 2 divisors, whose sum is σ = 10040032392. Its totient is φ = 10040032390.

The previous prime is 10040032333. The next prime is 10040032393. The reversal of 10040032391 is 19323004001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10040032391 - 2¹⁰ = 10040031367 is a prime.

Together with 10040032393, 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 (10040032393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5020016195 + 5020016196.

It is an arithmetic number, because the mean of its divisors is an integer number (5020016196).

Almost surely, 2^10040032391 is an apocalyptic number.

10040032391 is a deficient number, since it is larger than the sum of its proper divisors (1).

10040032391 is an equidigital number, since it uses as much as digits as its factorization.

10040032391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 10040032391 its reverse (19323004001), we get a palindrome (29363036392).

The spelling of 10040032391 in words is "ten billion, forty million, thirty-two thousand, three hundred ninety-one".