1005501331 has 2 divisors, whose sum is σ = 1005501332. Its totient is φ = 1005501330.

The previous prime is 1005501323. The next prime is 1005501377. The reversal of 1005501331 is 1331055001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1005501331 - 2³ = 1005501323 is a prime.

It is a super-2 number, since 2×1005501331² = 2022065853285543122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1005501299 and 1005501308.

It is not a weakly prime, because it can be changed into another prime (1005501131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502750665 + 502750666.

It is an arithmetic number, because the mean of its divisors is an integer number (502750666).

Almost surely, 2^1005501331 is an apocalyptic number.

1005501331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005501331 is an equidigital number, since it uses as much as digits as its factorization.

1005501331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 1005501331 is about 31709.6409787307. The cubic root of 1005501331 is about 1001.8304245019.

Adding to 1005501331 its reverse (1331055001), we get a palindrome (2336556332).

The spelling of 1005501331 in words is "one billion, five million, five hundred one thousand, three hundred thirty-one".