16431503323323 has 64 divisors (see below), whose sum is σ = 25938150884352. Its totient is φ = 9140782510080.

The previous prime is 16431503323321. The next prime is 16431503323327. The reversal of 16431503323323 is 32332330513461.

It is not a de Polignac number, because 16431503323323 - 2¹ = 16431503323321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16431503323321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3310815 + ... + 6620007.

It is an arithmetic number, because the mean of its divisors is an integer number (405283607568).

Almost surely, 2^{16431503323323} is an apocalyptic number.

16431503323323 is a deficient number, since it is larger than the sum of its proper divisors (9506647561029).

16431503323323 is a wasteful number, since it uses less digits than its factorization.

16431503323323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309444.

The product of its (nonzero) digits is 349920, while the sum is 39.

Adding to 16431503323323 its reverse (32332330513461), we get a palindrome (48763833836784).

The spelling of 16431503323323 in words is "sixteen trillion, four hundred thirty-one billion, five hundred three million, three hundred twenty-three thousand, three hundred twenty-three".