31121100241 has 8 divisors (see below), whose sum is σ = 38800332864. Its totient is φ = 24250207920.

The previous prime is 31121100239. The next prime is 31121100247. The reversal of 31121100241 is 14200112113.

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 31121100241 - 2¹ = 31121100239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31121100247) 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, 202084990 + ... + 202085143.

It is an arithmetic number, because the mean of its divisors is an integer number (4850041608).

Almost surely, 2^31121100241 is an apocalyptic number.

It is an amenable number.

31121100241 is a deficient number, since it is larger than the sum of its proper divisors (7679232623).

31121100241 is a wasteful number, since it uses less digits than its factorization.

31121100241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404170151.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 31121100241 its reverse (14200112113), we get a palindrome (45321212354).

The spelling of 31121100241 in words is "thirty-one billion, one hundred twenty-one million, one hundred thousand, two hundred forty-one".