1012343209 has 4 divisors (see below), whose sum is σ = 1025157760. Its totient is φ = 999528660.

The previous prime is 1012343207. The next prime is 1012343221. The reversal of 1012343209 is 9023432101.

1012343209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9023432101 = 19 ⋅474917479.

It is a cyclic number.

It is not a de Polignac number, because 1012343209 - 2¹ = 1012343207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012343207) 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, 6407157 + ... + 6407314.

It is an arithmetic number, because the mean of its divisors is an integer number (256289440).

Almost surely, 2^1012343209 is an apocalyptic number.

It is an amenable number.

1012343209 is a deficient number, since it is larger than the sum of its proper divisors (12814551).

1012343209 is an equidigital number, since it uses as much as digits as its factorization.

1012343209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12814550.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1012343209 is about 31817.3413251327. The cubic root of 1012343209 is about 1004.0975898245.

The spelling of 1012343209 in words is "one billion, twelve million, three hundred forty-three thousand, two hundred nine".