1000323121 has 16 divisors (see below), whose sum is σ = 1155423744. Its totient is φ = 848300544.

The previous prime is 1000323041. The next prime is 1000323131. The reversal of 1000323121 is 1213230001.

It is not a de Polignac number, because 1000323121 - 2²⁷ = 866105393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000323131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753160 + ... + 754486.

It is an arithmetic number, because the mean of its divisors is an integer number (72213984).

Almost surely, 2^1000323121 is an apocalyptic number.

It is an amenable number.

1000323121 is a deficient number, since it is larger than the sum of its proper divisors (155100623).

1000323121 is a wasteful number, since it uses less digits than its factorization.

1000323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1000323121 is about 31627.8851806440. The cubic root of 1000323121 is about 1000.1076954013.

Adding to 1000323121 its reverse (1213230001), we get a palindrome (2213553122).

It can be divided in two parts, 10003 and 23121, that added together give a square (33124 = 182²).

The spelling of 1000323121 in words is "one billion, three hundred twenty-three thousand, one hundred twenty-one".