31100022101 has 4 divisors (see below), whose sum is σ = 31100601900. Its totient is φ = 31099442304.

The previous prime is 31100022097. The next prime is 31100022103. The reversal of 31100022101 is 10122000113.

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 20751843025 + 10348179076 = 144055^2 + 101726^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100022101 - 2² = 31100022097 is a prime.

It is a super-2 number, since 2×31100022101² (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 (31100022103) 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, 200186 + ... + 319803.

It is an arithmetic number, because the mean of its divisors is an integer number (7775150475).

Almost surely, 2^31100022101 is an apocalyptic number.

It is an amenable number.

31100022101 is a deficient number, since it is larger than the sum of its proper divisors (579799).

31100022101 is an equidigital number, since it uses as much as digits as its factorization.

31100022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579798.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 31100022101 its reverse (10122000113), we get a palindrome (41222022214).

The spelling of 31100022101 in words is "thirty-one billion, one hundred million, twenty-two thousand, one hundred one".