1005223005131 has 4 divisors (see below), whose sum is σ = 1005383513232. Its totient is φ = 1005062497032.

The previous prime is 1005223005109. The next prime is 1005223005181. The reversal of 1005223005131 is 1315003225001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1005223005131 - 2²⁶ = 1005155896267 is a prime.

It is a super-2 number, since 2×1005223005131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005223005097 and 1005223005106.

It is not an unprimeable number, because it can be changed into a prime (1005223005181) 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, 80244656 + ... + 80257181.

It is an arithmetic number, because the mean of its divisors is an integer number (251345878308).

Almost surely, 2^{1005223005131} is an apocalyptic number.

1005223005131 is a deficient number, since it is larger than the sum of its proper divisors (160508101).

1005223005131 is an equidigital number, since it uses as much as digits as its factorization.

1005223005131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160508100.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 1005223005131 in words is "one trillion, five billion, two hundred twenty-three million, five thousand, one hundred thirty-one".