31212230422 has 16 divisors (see below), whose sum is σ = 47250874944. Its totient is φ = 15462576000.

The previous prime is 31212230419. The next prime is 31212230437. The reversal of 31212230422 is 22403221213.

It is a super-3 number, since 3×31212230422³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31212230393 and 31212230402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60979 + ... + 257182.

It is an arithmetic number, because the mean of its divisors is an integer number (2953179684).

Almost surely, 2^31212230422 is an apocalyptic number.

31212230422 is a deficient number, since it is larger than the sum of its proper divisors (16038644522).

31212230422 is a wasteful number, since it uses less digits than its factorization.

31212230422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318615.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31212230422 its reverse (22403221213), we get a palindrome (53615451635).

The spelling of 31212230422 in words is "thirty-one billion, two hundred twelve million, two hundred thirty thousand, four hundred twenty-two".