1000240031491 has 2 divisors, whose sum is σ = 1000240031492. Its totient is φ = 1000240031490.

The previous prime is 1000240031383. The next prime is 1000240031503. The reversal of 1000240031491 is 1941300420001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000240031491 - 2²⁹ = 999703160579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000240031191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500120015745 + 500120015746.

It is an arithmetic number, because the mean of its divisors is an integer number (500120015746).

Almost surely, 2^{1000240031491} is an apocalyptic number.

1000240031491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000240031491 is an equidigital number, since it uses as much as digits as its factorization.

1000240031491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1000240031491 its reverse (1941300420001), we get a palindrome (2941540451492).

The spelling of 1000240031491 in words is "one trillion, two hundred forty million, thirty-one thousand, four hundred ninety-one".