31144122222 has 8 divisors (see below), whose sum is σ = 62288244456. Its totient is φ = 10381374072.

The previous prime is 31144122211. The next prime is 31144122223. The reversal of 31144122222 is 22222144113.

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

31144122222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 31144122192 and 31144122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144122223) 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, 2595343513 + ... + 2595343524.

It is an arithmetic number, because the mean of its divisors is an integer number (7786030557).

Almost surely, 2^31144122222 is an apocalyptic number.

31144122222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31144122222 is a wasteful number, since it uses less digits than its factorization.

31144122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190687042.

The product of its digits is 1536, while the sum is 24.

Adding to 31144122222 its reverse (22222144113), we get a palindrome (53366266335).

The spelling of 31144122222 in words is "thirty-one billion, one hundred forty-four million, one hundred twenty-two thousand, two hundred twenty-two".