20401143323 has 16 divisors (see below), whose sum is σ = 22366278144. Its totient is φ = 18454640160.

The previous prime is 20401143317. The next prime is 20401143331. The reversal of 20401143323 is 32334110402.

It is not a de Polignac number, because 20401143323 - 2¹⁰ = 20401142299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401143023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2041886 + ... + 2051852.

It is an arithmetic number, because the mean of its divisors is an integer number (1397892384).

Almost surely, 2^20401143323 is an apocalyptic number.

20401143323 is a deficient number, since it is larger than the sum of its proper divisors (1965134821).

20401143323 is a wasteful number, since it uses less digits than its factorization.

20401143323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10882.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20401143323 its reverse (32334110402), we get a palindrome (52735253725).

The spelling of 20401143323 in words is "twenty billion, four hundred one million, one hundred forty-three thousand, three hundred twenty-three".