1045343321 has 12 divisors (see below), whose sum is σ = 1152680676. Its totient is φ = 947279520.

The previous prime is 1045343303. The next prime is 1045343329. The reversal of 1045343321 is 1233435401.

It can be written as a sum of positive squares in 2 ways, for example, as 257923600 + 787419721 = 16060^2 + 28061^2 .

It is not a de Polignac number, because 1045343321 - 2¹⁴ = 1045326937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045343329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24731 + ... + 51983.

It is an arithmetic number, because the mean of its divisors is an integer number (96056723).

Almost surely, 2^1045343321 is an apocalyptic number.

1045343321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1045343321 is a deficient number, since it is larger than the sum of its proper divisors (107337355).

1045343321 is a wasteful number, since it uses less digits than its factorization.

1045343321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27592 (or 27581 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1045343321 is about 32331.7695309119. The cubic root of 1045343321 is about 1014.8915803855.

Adding to 1045343321 its reverse (1233435401), we get a palindrome (2278778722).

The spelling of 1045343321 in words is "one billion, forty-five million, three hundred forty-three thousand, three hundred twenty-one".