31132311323111 has 16 divisors (see below), whose sum is σ = 32244224463360. Its totient is φ = 30022961280480.

The previous prime is 31132311323063. The next prime is 31132311323119. The reversal of 31132311323111 is 11132311323113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31132311323111 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 (31132311323119) 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, 688882526 + ... + 688927716.

It is an arithmetic number, because the mean of its divisors is an integer number (2015264028960).

Almost surely, 2^{31132311323111} is an apocalyptic number.

31132311323111 is a deficient number, since it is larger than the sum of its proper divisors (1111913140249).

31132311323111 is a wasteful number, since it uses less digits than its factorization.

31132311323111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73006.

The product of its digits is 972, while the sum is 26.

Adding to 31132311323111 its reverse (11132311323113), we get a palindrome (42264622646224).

The spelling of 31132311323111 in words is "thirty-one trillion, one hundred thirty-two billion, three hundred eleven million, three hundred twenty-three thousand, one hundred eleven".