1000312229 has 4 divisors (see below), whose sum is σ = 1143213984. Its totient is φ = 857410476.

The previous prime is 1000312223. The next prime is 1000312237. The reversal of 1000312229 is 9222130001.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000312229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000312229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000312223) 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 3 ways as a sum of consecutive naturals, for example, 71450867 + ... + 71450880.

It is an arithmetic number, because the mean of its divisors is an integer number (285803496).

Almost surely, 2^1000312229 is an apocalyptic number.

It is an amenable number.

1000312229 is a deficient number, since it is larger than the sum of its proper divisors (142901755).

1000312229 is an equidigital number, since it uses as much as digits as its factorization.

1000312229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142901754.

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

The square root of 1000312229 is about 31627.7129903507. The cubic root of 1000312229 is about 1000.1040655033.

The spelling of 1000312229 in words is "one billion, three hundred twelve thousand, two hundred twenty-nine".