31321111101 has 48 divisors (see below), whose sum is σ = 48894902784. Its totient is φ = 17782009056.

The previous prime is 31321111069. The next prime is 31321111177. The reversal of 31321111101 is 10111112313.

It is not a de Polignac number, because 31321111101 - 2⁵ = 31321111069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321111201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29464296 + ... + 29465358.

It is an arithmetic number, because the mean of its divisors is an integer number (1018643808).

Almost surely, 2^31321111101 is an apocalyptic number.

It is an amenable number.

31321111101 is a deficient number, since it is larger than the sum of its proper divisors (17573791683).

31321111101 is a wasteful number, since it uses less digits than its factorization.

31321111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 31321111101 its reverse (10111112313), we get a palindrome (41432223414).

The spelling of 31321111101 in words is "thirty-one billion, three hundred twenty-one million, one hundred eleven thousand, one hundred one".