31321132222 has 8 divisors (see below), whose sum is σ = 47003628096. Its totient is φ = 15653256192.

The previous prime is 31321132181. The next prime is 31321132223. The reversal of 31321132222 is 22223112313.

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

It is a junction number, because it is equal to n+sod(n) for n = 31321132193 and 31321132202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321132223) 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 3 ways as a sum of consecutive naturals, for example, 3649603 + ... + 3658174.

It is an arithmetic number, because the mean of its divisors is an integer number (5875453512).

Almost surely, 2^31321132222 is an apocalyptic number.

31321132222 is a deficient number, since it is larger than the sum of its proper divisors (15682495874).

31321132222 is a wasteful number, since it uses less digits than its factorization.

31321132222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7309922.

The product of its digits is 864, while the sum is 22.

Adding to 31321132222 its reverse (22223112313), we get a palindrome (53544244535).

The spelling of 31321132222 in words is "thirty-one billion, three hundred twenty-one million, one hundred thirty-two thousand, two hundred twenty-two".