31444041121 has 8 divisors (see below), whose sum is σ = 31496086440. Its totient is φ = 31392039168.

The previous prime is 31444041073. The next prime is 31444041151. The reversal of 31444041121 is 12114044413.

It can be written as a sum of positive squares in 4 ways, for example, as 4078610496 + 27365430625 = 63864^2 + 165425^2 .

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 31444041121 - 2²⁹ = 30907170209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31444041151) 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, 1642215 + ... + 1661251.

It is an arithmetic number, because the mean of its divisors is an integer number (3937010805).

Almost surely, 2^31444041121 is an apocalyptic number.

It is an amenable number.

31444041121 is a deficient number, since it is larger than the sum of its proper divisors (52045319).

31444041121 is a wasteful number, since it uses less digits than its factorization.

31444041121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21683.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 31444041121 its reverse (12114044413), we get a palindrome (43558085534).

The spelling of 31444041121 in words is "thirty-one billion, four hundred forty-four million, forty-one thousand, one hundred twenty-one".