31421124244141 has 4 divisors (see below), whose sum is σ = 31732224484284. Its totient is φ = 31110024004000.

The previous prime is 31421124244099. The next prime is 31421124244151. The reversal of 31421124244141 is 14144242112413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30524796255625 + 896327988516 = 5524925^2 + 946746^2 .

It is a cyclic number.

It is not a de Polignac number, because 31421124244141 - 2⁹ = 31421124243629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31421124244097 and 31421124244106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421124244151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155550119920 + ... + 155550120121.

It is an arithmetic number, because the mean of its divisors is an integer number (7933056121071).

Almost surely, 2^{31421124244141} is an apocalyptic number.

It is an amenable number.

31421124244141 is a deficient number, since it is larger than the sum of its proper divisors (311100240143).

31421124244141 is a wasteful number, since it uses less digits than its factorization.

31421124244141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311100240142.

The product of its digits is 24576, while the sum is 34.

Adding to 31421124244141 its reverse (14144242112413), we get a palindrome (45565366356554).

The spelling of 31421124244141 in words is "thirty-one trillion, four hundred twenty-one billion, one hundred twenty-four million, two hundred forty-four thousand, one hundred forty-one".