31231202212101 has 16 divisors (see below), whose sum is σ = 43352901712064. Its totient is φ = 19980569199744.

The previous prime is 31231202212069. The next prime is 31231202212121. The reversal of 31231202212101 is 10121220213213.

It is not a de Polignac number, because 31231202212101 - 2⁵ = 31231202212069 is a prime.

It is a super-2 number, since 2×31231202212101² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231202212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1927130131 + ... + 1927146336.

It is an arithmetic number, because the mean of its divisors is an integer number (2709556357004).

Almost surely, 2^{31231202212101} is an apocalyptic number.

It is an amenable number.

31231202212101 is a deficient number, since it is larger than the sum of its proper divisors (12121699499963).

31231202212101 is a wasteful number, since it uses less digits than its factorization.

31231202212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854276580.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31231202212101 its reverse (10121220213213), we get a palindrome (41352422425314).

The spelling of 31231202212101 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred two million, two hundred twelve thousand, one hundred one".