1002231209 has 64 divisors (see below), whose sum is σ = 1341849600. Its totient is φ = 727833600.

The previous prime is 1002231169. The next prime is 1002231227. The reversal of 1002231209 is 9021322001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002231209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1002231809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5537099 + ... + 5537279.

It is an arithmetic number, because the mean of its divisors is an integer number (20966400).

Almost surely, 2^1002231209 is an apocalyptic number.

1002231209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1002231209 is a deficient number, since it is larger than the sum of its proper divisors (339618391).

1002231209 is a wasteful number, since it uses less digits than its factorization.

1002231209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1002231209 is about 31658.0354570526. The cubic root of 1002231209 is about 1000.7431838742.

The spelling of 1002231209 in words is "one billion, two million, two hundred thirty-one thousand, two hundred nine".