31112200321121 has 8 divisors (see below), whose sum is σ = 31398692962560. Its totient is φ = 30825726945552.

The previous prime is 31112200321117. The next prime is 31112200321201. The reversal of 31112200321121 is 12112300221113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31112200321121 - 2² = 31112200321117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31112200321093 and 31112200321102.

It is not an unprimeable number, because it can be changed into a prime (31112200321921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561745 + ... + 8041358.

It is an arithmetic number, because the mean of its divisors is an integer number (3924836620320).

Almost surely, 2^{31112200321121} is an apocalyptic number.

It is an amenable number.

31112200321121 is a deficient number, since it is larger than the sum of its proper divisors (286492641439).

31112200321121 is a wasteful number, since it uses less digits than its factorization.

31112200321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9632935.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 31112200321121 its reverse (12112300221113), we get a palindrome (43224500542234).

The spelling of 31112200321121 in words is "thirty-one trillion, one hundred twelve billion, two hundred million, three hundred twenty-one thousand, one hundred twenty-one".