31100232112231 has 4 divisors (see below), whose sum is σ = 31102469070112. Its totient is φ = 31097995154352.

The previous prime is 31100232112177. The next prime is 31100232112237. The reversal of 31100232112231 is 13221123200113.

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 31100232112231 - 2¹¹ = 31100232110183 is a prime.

It is a super-2 number, since 2×31100232112231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100232112237) 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, 1118458086 + ... + 1118485891.

It is an arithmetic number, because the mean of its divisors is an integer number (7775617267528).

Almost surely, 2^{31100232112231} is an apocalyptic number.

31100232112231 is a deficient number, since it is larger than the sum of its proper divisors (2236957881).

31100232112231 is a wasteful number, since it uses less digits than its factorization.

31100232112231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236957880.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31100232112231 its reverse (13221123200113), we get a palindrome (44321355312344).

The spelling of 31100232112231 in words is "thirty-one trillion, one hundred billion, two hundred thirty-two million, one hundred twelve thousand, two hundred thirty-one".