31023113011111 has 32 divisors (see below), whose sum is σ = 34014256335360. Its totient is φ = 28122613901184.

The previous prime is 31023113011057. The next prime is 31023113011123. The reversal of 31023113011111 is 11111031132013.

It is a cyclic number.

It is not a de Polignac number, because 31023113011111 - 2⁷ = 31023113010983 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 (31023117011111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 514304325 + ... + 514364641.

It is an arithmetic number, because the mean of its divisors is an integer number (1062945510480).

Almost surely, 2^{31023113011111} is an apocalyptic number.

31023113011111 is a deficient number, since it is larger than the sum of its proper divisors (2991143324249).

31023113011111 is a wasteful number, since it uses less digits than its factorization.

31023113011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63255.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 31023113011111 its reverse (11111031132013), we get a palindrome (42134144143124).

The spelling of 31023113011111 in words is "thirty-one trillion, twenty-three billion, one hundred thirteen million, eleven thousand, one hundred eleven".