31321101101 has 4 divisors (see below), whose sum is σ = 32401139100. Its totient is φ = 30241063104.

The previous prime is 31321101089. The next prime is 31321101103. The reversal of 31321101101 is 10110112313.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5952894025 + 25368207076 = 77155^2 + 159274^2 .

It is a cyclic number.

It is not a de Polignac number, because 31321101101 - 2³⁴ = 14141231917 is a prime.

It is a super-2 number, since 2×31321101101² (a number of 22 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 (31321101103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540018956 + ... + 540019013.

It is an arithmetic number, because the mean of its divisors is an integer number (8100284775).

Almost surely, 2^31321101101 is an apocalyptic number.

It is an amenable number.

31321101101 is a deficient number, since it is larger than the sum of its proper divisors (1080037999).

31321101101 is a wasteful number, since it uses less digits than its factorization.

31321101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080037998.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 31321101101 its reverse (10110112313), we get a palindrome (41431213414).

The spelling of 31321101101 in words is "thirty-one billion, three hundred twenty-one million, one hundred one thousand, one hundred one".