31242144341 has 4 divisors (see below), whose sum is σ = 31243955532. Its totient is φ = 31240333152.

The previous prime is 31242144331. The next prime is 31242144359. The reversal of 31242144341 is 14344124213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14344124213 = 229 ⋅62638097.

It can be written as a sum of positive squares in 2 ways, for example, as 22694217316 + 8547927025 = 150646^2 + 92455^2 .

It is a cyclic number.

It is not a de Polignac number, because 31242144341 - 2²⁶ = 31175035477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31242144331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879470 + ... + 914303.

It is an arithmetic number, because the mean of its divisors is an integer number (7810988883).

Almost surely, 2^31242144341 is an apocalyptic number.

It is an amenable number.

31242144341 is a deficient number, since it is larger than the sum of its proper divisors (1811191).

31242144341 is a wasteful number, since it uses less digits than its factorization.

31242144341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811190.

The product of its digits is 9216, while the sum is 29.

Adding to 31242144341 its reverse (14344124213), we get a palindrome (45586268554).

The spelling of 31242144341 in words is "thirty-one billion, two hundred forty-two million, one hundred forty-four thousand, three hundred forty-one".