1002312031111 has 4 divisors (see below), whose sum is σ = 1007849666824. Its totient is φ = 996774395400.

The previous prime is 1002312031093. The next prime is 1002312031141. The reversal of 1002312031111 is 1111302132001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002312031111 - 2²¹ = 1002309933959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002312031141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2768817585 + ... + 2768817946.

It is an arithmetic number, because the mean of its divisors is an integer number (251962416706).

Almost surely, 2^{1002312031111} is an apocalyptic number.

1002312031111 is a deficient number, since it is larger than the sum of its proper divisors (5537635713).

1002312031111 is an equidigital number, since it uses as much as digits as its factorization.

1002312031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537635712.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1002312031111 its reverse (1111302132001), we get a palindrome (2113614163112).

The spelling of 1002312031111 in words is "one trillion, two billion, three hundred twelve million, thirty-one thousand, one hundred eleven".