1053400321 has 4 divisors (see below), whose sum is σ = 1089724500. Its totient is φ = 1017076144.

The previous prime is 1053400319. The next prime is 1053400333. The reversal of 1053400321 is 1230043501.

1053400321 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.

It can be written as a sum of positive squares in 2 ways, for example, as 844193025 + 209207296 = 29055^2 + 14464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053400321 - 2¹ = 1053400319 is a prime.

It is a super-3 number, since 3×1053400321³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1053400021) 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, 18162046 + ... + 18162103.

It is an arithmetic number, because the mean of its divisors is an integer number (272431125).

Almost surely, 2^1053400321 is an apocalyptic number.

It is an amenable number.

1053400321 is a deficient number, since it is larger than the sum of its proper divisors (36324179).

1053400321 is an equidigital number, since it uses as much as digits as its factorization.

1053400321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36324178.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1053400321 is about 32456.1291746259. The cubic root of 1053400321 is about 1017.4923408962.

Adding to 1053400321 its reverse (1230043501), we get a palindrome (2283443822).

The spelling of 1053400321 in words is "one billion, fifty-three million, four hundred thousand, three hundred twenty-one".