20431222546 has 8 divisors (see below), whose sum is σ = 35024952960. Its totient is φ = 8756238228.

The previous prime is 20431222531. The next prime is 20431222571. The reversal of 20431222546 is 64522213402.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 729686506 + ... + 729686533.

It is an arithmetic number, because the mean of its divisors is an integer number (4378119120).

Almost surely, 2^20431222546 is an apocalyptic number.

20431222546 is a deficient number, since it is larger than the sum of its proper divisors (14593730414).

20431222546 is a wasteful number, since it uses less digits than its factorization.

20431222546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459373048.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 20431222546 its reverse (64522213402), we get a palindrome (84953435948).

The spelling of 20431222546 in words is "twenty billion, four hundred thirty-one million, two hundred twenty-two thousand, five hundred forty-six".