31142444443 has 8 divisors (see below), whose sum is σ = 34009462080. Its totient is φ = 28281407880.

The previous prime is 31142444413. The next prime is 31142444467. The reversal of 31142444443 is 34444424113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31142444443 - 2³³ = 22552509851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31142444399 and 31142444408.

It is not an unprimeable number, because it can be changed into a prime (31142444413) 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, 1484373 + ... + 1505206.

It is an arithmetic number, because the mean of its divisors is an integer number (4251182760).

Almost surely, 2^31142444443 is an apocalyptic number.

31142444443 is a deficient number, since it is larger than the sum of its proper divisors (2867017637).

31142444443 is a wasteful number, since it uses less digits than its factorization.

31142444443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990537.

The product of its digits is 73728, while the sum is 34.

Adding to 31142444443 its reverse (34444424113), we get a palindrome (65586868556).

The spelling of 31142444443 in words is "thirty-one billion, one hundred forty-two million, four hundred forty-four thousand, four hundred forty-three".