20431441432 has 32 divisors (see below), whose sum is σ = 40834692000. Its totient is φ = 9550257664.

The previous prime is 20431441421. The next prime is 20431441501. The reversal of 20431441432 is 23414413402.

It is a self number, because there is not a number n which added to its sum of digits gives 20431441432.

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, 483868 + ... + 524395.

It is an arithmetic number, because the mean of its divisors is an integer number (1276084125).

Almost surely, 2^20431441432 is an apocalyptic number.

It is an amenable number.

20431441432 is a deficient number, since it is larger than the sum of its proper divisors (20403250568).

20431441432 is a wasteful number, since it uses less digits than its factorization.

20431441432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008435 (or 1008431 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20431441432 its reverse (23414413402), we get a palindrome (43845854834).

The spelling of 20431441432 in words is "twenty billion, four hundred thirty-one million, four hundred forty-one thousand, four hundred thirty-two".