31220134443143 has 8 divisors (see below), whose sum is σ = 31384005159936. Its totient is φ = 31056268044600.

The previous prime is 31220134443137. The next prime is 31220134443151. The reversal of 31220134443143 is 34134443102213.

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 31220134443143 - 2¹⁴ = 31220134426759 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 (31220134433143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13966880 + ... + 16047242.

It is an arithmetic number, because the mean of its divisors is an integer number (3923000644992).

Almost surely, 2^{31220134443143} is an apocalyptic number.

31220134443143 is a deficient number, since it is larger than the sum of its proper divisors (163870716793).

31220134443143 is a wasteful number, since it uses less digits than its factorization.

31220134443143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159125.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 31220134443143 its reverse (34134443102213), we get a palindrome (65354577545356).

The spelling of 31220134443143 in words is "thirty-one trillion, two hundred twenty billion, one hundred thirty-four million, four hundred forty-three thousand, one hundred forty-three".