31112300222021 has 16 divisors (see below), whose sum is σ = 32238847065600. Its totient is φ = 30003466732800.

The previous prime is 31112300221963. The next prime is 31112300222033. The reversal of 31112300222021 is 12022200321113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31112300222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31112300221984 and 31112300222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112300222051) 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, 10987826 + ... + 13526156.

It is an arithmetic number, because the mean of its divisors is an integer number (2014927941600).

Almost surely, 2^{31112300222021} is an apocalyptic number.

It is an amenable number.

31112300222021 is a deficient number, since it is larger than the sum of its proper divisors (1126546843579).

31112300222021 is a wasteful number, since it uses less digits than its factorization.

31112300222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541820.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31112300222021 its reverse (12022200321113), we get a palindrome (43134500543134).

The spelling of 31112300222021 in words is "thirty-one trillion, one hundred twelve billion, three hundred million, two hundred twenty-two thousand, twenty-one".