31224121201432 has 32 divisors (see below), whose sum is σ = 59316238429200. Its totient is φ = 15407128433664.

The previous prime is 31224121201421. The next prime is 31224121201451. The reversal of 31224121201432 is 23410212142213.

It is a self number, because there is not a number n which added to its sum of digits gives 31224121201432.

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, 41553153 + ... + 42297904.

Almost surely, 2^{31224121201432} is an apocalyptic number.

It is an amenable number.

31224121201432 is a deficient number, since it is larger than the sum of its proper divisors (28092117227768).

31224121201432 is a wasteful number, since it uses less digits than its factorization.

31224121201432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83851675 (or 83851671 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 31224121201432 its reverse (23410212142213), we get a palindrome (54634333343645).

The spelling of 31224121201432 in words is "thirty-one trillion, two hundred twenty-four billion, one hundred twenty-one million, two hundred one thousand, four hundred thirty-two".