31232213100111 has 4 divisors (see below), whose sum is σ = 41642950800152. Its totient is φ = 20821475400072.

The previous prime is 31232213100037. The next prime is 31232213100133. The reversal of 31232213100111 is 11100131223213.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31232213100111 - 2¹⁴ = 31232213083727 is a prime.

It is a super-2 number, since 2×31232213100111² (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 (31232213100161) 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, 5205368850016 + ... + 5205368850021.

It is an arithmetic number, because the mean of its divisors is an integer number (10410737700038).

Almost surely, 2^{31232213100111} is an apocalyptic number.

31232213100111 is a deficient number, since it is larger than the sum of its proper divisors (10410737700041).

31232213100111 is a wasteful number, since it uses less digits than its factorization.

31232213100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410737700040.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31232213100111 its reverse (11100131223213), we get a palindrome (42332344323324).

The spelling of 31232213100111 in words is "thirty-one trillion, two hundred thirty-two billion, two hundred thirteen million, one hundred thousand, one hundred eleven".