31124214436 has 12 divisors (see below), whose sum is σ = 62248428928. Its totient is φ = 13338949032.

The previous prime is 31124214409. The next prime is 31124214467. The reversal of 31124214436 is 63441242113.

31124214436 is an admirable number.

It is a super-2 number, since 2×31124214436² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31124214398 and 31124214407.

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 3 ways as a sum of consecutive naturals, for example, 555789516 + ... + 555789571.

Almost surely, 2^31124214436 is an apocalyptic number.

It is an amenable number.

31124214436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31124214436 is a wasteful number, since it uses less digits than its factorization.

31124214436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111579098 (or 1111579096 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

Adding to 31124214436 its reverse (63441242113), we get a palindrome (94565456549).

The spelling of 31124214436 in words is "thirty-one billion, one hundred twenty-four million, two hundred fourteen thousand, four hundred thirty-six".