31443424422031 has 4 divisors (see below), whose sum is σ = 31507463983464. Its totient is φ = 31379384860600.

The previous prime is 31443424422029. The next prime is 31443424422119. The reversal of 31443424422031 is 13022442434413.

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

It is a cyclic number.

It is not a de Polignac number, because 31443424422031 - 2¹ = 31443424422029 is a prime.

It is a super-2 number, since 2×31443424422031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31443424422331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32019779980 + ... + 32019780961.

It is an arithmetic number, because the mean of its divisors is an integer number (7876865995866).

Almost surely, 2^{31443424422031} is an apocalyptic number.

31443424422031 is a deficient number, since it is larger than the sum of its proper divisors (64039561433).

31443424422031 is an equidigital number, since it uses as much as digits as its factorization.

31443424422031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64039561432.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 31443424422031 its reverse (13022442434413), we get a palindrome (44465866856444).

The spelling of 31443424422031 in words is "thirty-one trillion, four hundred forty-three billion, four hundred twenty-four million, four hundred twenty-two thousand, thirty-one".