31222124412 has 24 divisors (see below), whose sum is σ = 72855342336. Its totient is φ = 10406843568.

The previous prime is 31222124399. The next prime is 31222124441. The reversal of 31222124412 is 21442122213.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 232183 + ... + 341105.

It is an arithmetic number, because the mean of its divisors is an integer number (3035639264).

Almost surely, 2^31222124412 is an apocalyptic number.

It is an amenable number.

31222124412 is an abundant number, since it is smaller than the sum of its proper divisors (41633217924).

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

31222124412 is a wasteful number, since it uses less digits than its factorization.

31222124412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132817 (or 132815 counting only the distinct ones).

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

Adding to 31222124412 its reverse (21442122213), we get a palindrome (52664246625).

It can be divided in two parts, 312221 and 24412, that added together give a palindrome (336633).

The spelling of 31222124412 in words is "thirty-one billion, two hundred twenty-two million, one hundred twenty-four thousand, four hundred twelve".