31121200023321 has 32 divisors (see below), whose sum is σ = 41706410803200. Its totient is φ = 20641896394560.

The previous prime is 31121200023269. The next prime is 31121200023337. The reversal of 31121200023321 is 12332000212113.

It is not a de Polignac number, because 31121200023321 - 2²³ = 31121191634713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31121200023721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5688390616 + ... + 5688396086.

It is an arithmetic number, because the mean of its divisors is an integer number (1303325337600).

Almost surely, 2^{31121200023321} is an apocalyptic number.

It is an amenable number.

31121200023321 is a deficient number, since it is larger than the sum of its proper divisors (10585210779879).

31121200023321 is a wasteful number, since it uses less digits than its factorization.

31121200023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11469.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31121200023321 its reverse (12332000212113), we get a palindrome (43453200235434).

The spelling of 31121200023321 in words is "thirty-one trillion, one hundred twenty-one billion, two hundred million, twenty-three thousand, three hundred twenty-one".