31111301113111 has 16 divisors (see below), whose sum is σ = 32971332189600. Its totient is φ = 29303851852800.

The previous prime is 31111301113049. The next prime is 31111301113121. The reversal of 31111301113111 is 11131110311113.

It is a cyclic number.

It is not a de Polignac number, because 31111301113111 - 2²¹ = 31111299015959 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 (31111301113121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16686991 + ... + 18457471.

It is an arithmetic number, because the mean of its divisors is an integer number (2060708261850).

Almost surely, 2^{31111301113111} is an apocalyptic number.

31111301113111 is a deficient number, since it is larger than the sum of its proper divisors (1860031076489).

31111301113111 is a wasteful number, since it uses less digits than its factorization.

31111301113111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785330.

The product of its (nonzero) digits is 27, while the sum is 19.

Adding to 31111301113111 its reverse (11131110311113), we get a palindrome (42242411424224).

The spelling of 31111301113111 in words is "thirty-one trillion, one hundred eleven billion, three hundred one million, one hundred thirteen thousand, one hundred eleven".