31110113211231 has 8 divisors (see below), whose sum is σ = 41574638765440. Its totient is φ = 20692831565592.

The previous prime is 31110113211227. The next prime is 31110113211253. The reversal of 31110113211231 is 13211231101113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31110113211231 - 2² = 31110113211227 is a prime.

It is a super-2 number, since 2×31110113211231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31110113211198 and 31110113211207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31110113219231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11810975605 + ... + 11810978238.

It is an arithmetic number, because the mean of its divisors is an integer number (5196829845680).

Almost surely, 2^{31110113211231} is an apocalyptic number.

31110113211231 is a deficient number, since it is larger than the sum of its proper divisors (10464525554209).

31110113211231 is a wasteful number, since it uses less digits than its factorization.

31110113211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23621954285.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 31110113211231 its reverse (13211231101113), we get a palindrome (44321344312344).

The spelling of 31110113211231 in words is "thirty-one trillion, one hundred ten billion, one hundred thirteen million, two hundred eleven thousand, two hundred thirty-one".