31102320021121 has 8 divisors (see below), whose sum is σ = 32459815252224. Its totient is φ = 29745259827360.

The previous prime is 31102320021053. The next prime is 31102320021131. The reversal of 31102320021121 is 12112002320113.

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 31102320021121 - 2¹¹ = 31102320019073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31102320021131) 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, 108613225 + ... + 108899206.

It is an arithmetic number, because the mean of its divisors is an integer number (4057476906528).

Almost surely, 2^{31102320021121} is an apocalyptic number.

It is an amenable number.

31102320021121 is a deficient number, since it is larger than the sum of its proper divisors (1357495231103).

31102320021121 is a wasteful number, since it uses less digits than its factorization.

31102320021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217518671.

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

Adding to 31102320021121 its reverse (12112002320113), we get a palindrome (43214322341234).

The spelling of 31102320021121 in words is "thirty-one trillion, one hundred two billion, three hundred twenty million, twenty-one thousand, one hundred twenty-one".