1005151323203 has 4 divisors (see below), whose sum is σ = 1005774481248. Its totient is φ = 1004528165160.

The previous prime is 1005151323193. The next prime is 1005151323221. The reversal of 1005151323203 is 3023231515001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005151323203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005151323263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311576603 + ... + 311579828.

It is an arithmetic number, because the mean of its divisors is an integer number (251443620312).

Almost surely, 2^{1005151323203} is an apocalyptic number.

1005151323203 is a deficient number, since it is larger than the sum of its proper divisors (623158045).

1005151323203 is an equidigital number, since it uses as much as digits as its factorization.

1005151323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623158044.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 1005151323203 its reverse (3023231515001), we get a palindrome (4028382838204).

The spelling of 1005151323203 in words is "one trillion, five billion, one hundred fifty-one million, three hundred twenty-three thousand, two hundred three".