31143033222 has 32 divisors (see below), whose sum is σ = 71197147392. Its totient is φ = 8896375584.

The previous prime is 31143033191. The next prime is 31143033223. The reversal of 31143033222 is 22233034113.

It is a super-3 number, since 3×31143033222³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31143033192 and 31143033201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143033223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173448 + ... + 303924.

It is an arithmetic number, because the mean of its divisors is an integer number (2224910856).

Almost surely, 2^31143033222 is an apocalyptic number.

31143033222 is an abundant number, since it is smaller than the sum of its proper divisors (40054114170).

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

31143033222 is a wasteful number, since it uses less digits than its factorization.

31143033222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136172.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31143033222 its reverse (22233034113), we get a palindrome (53376067335).

The spelling of 31143033222 in words is "thirty-one billion, one hundred forty-three million, thirty-three thousand, two hundred twenty-two".