31112301202021 has 32 divisors (see below), whose sum is σ = 34018919827200. Its totient is φ = 28280304105984.

The previous prime is 31112301201997. The next prime is 31112301202033. The reversal of 31112301202021 is 12020210321113.

It is a cyclic number.

It is not a de Polignac number, because 31112301202021 - 2⁷ = 31112301201893 is a prime.

It is a super-2 number, since 2×31112301202021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31112301202021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112301202721) 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 31 ways as a sum of consecutive naturals, for example, 4714696080 + ... + 4714702678.

It is an arithmetic number, because the mean of its divisors is an integer number (1063091244600).

Almost surely, 2^{31112301202021} is an apocalyptic number.

It is an amenable number.

31112301202021 is a deficient number, since it is larger than the sum of its proper divisors (2906618625179).

31112301202021 is a wasteful number, since it uses less digits than its factorization.

31112301202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13885.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31112301202021 its reverse (12020210321113), we get a palindrome (43132511523134).

The spelling of 31112301202021 in words is "thirty-one trillion, one hundred twelve billion, three hundred one million, two hundred two thousand, twenty-one".