31124224012 has 24 divisors (see below), whose sum is σ = 62256744704. Its totient is φ = 13337175312.

The previous prime is 31124223989. The next prime is 31124224031. The reversal of 31124224012 is 21042242113.

It is a super-2 number, since 2×31124224012² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 151843 + ... + 292069.

Almost surely, 2^31124224012 is an apocalyptic number.

It is an amenable number.

31124224012 is an abundant number, since it is smaller than the sum of its proper divisors (31132520692).

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

31124224012 is a wasteful number, since it uses less digits than its factorization.

31124224012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148165 (or 148163 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31124224012 its reverse (21042242113), we get a palindrome (52166466125).

The spelling of 31124224012 in words is "thirty-one billion, one hundred twenty-four million, two hundred twenty-four thousand, twelve".