31000022333212 has 24 divisors (see below), whose sum is σ = 54352066932576. Its totient is φ = 15470882638848.

The previous prime is 31000022333209. The next prime is 31000022333233. The reversal of 31000022333212 is 21233322000013.

It is a super-2 number, since 2×31000022333212² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2782068 + ... + 8351044.

It is an arithmetic number, because the mean of its divisors is an integer number (2264669455524).

Almost surely, 2^{31000022333212} is an apocalyptic number.

It is an amenable number.

31000022333212 is a deficient number, since it is larger than the sum of its proper divisors (23352044599364).

31000022333212 is a wasteful number, since it uses less digits than its factorization.

31000022333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571597 (or 5571595 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31000022333212 its reverse (21233322000013), we get a palindrome (52233344333225).

The spelling of 31000022333212 in words is "thirty-one trillion, twenty-two million, three hundred thirty-three thousand, two hundred twelve".