1071132321 has 8 divisors (see below), whose sum is σ = 1632201664. Its totient is φ = 612075600.

The previous prime is 1071132301. The next prime is 1071132389. The reversal of 1071132321 is 1232311701.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1071132321 - 2⁵ = 1071132289 is a prime.

It is a super-2 number, since 2×1071132321² = 2294648898181694082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 51006301 = 1071132321 / (1 + 0 + 7 + 1 + 1 + 3 + 2 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1071132301) 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 7 ways as a sum of consecutive naturals, for example, 25503130 + ... + 25503171.

It is an arithmetic number, because the mean of its divisors is an integer number (204025208).

Almost surely, 2^1071132321 is an apocalyptic number.

It is an amenable number.

1071132321 is a deficient number, since it is larger than the sum of its proper divisors (561069343).

1071132321 is an equidigital number, since it uses as much as digits as its factorization.

1071132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51006311.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1071132321 is about 32728.1579224985. The cubic root of 1071132321 is about 1023.1697884217.

The spelling of 1071132321 in words is "one billion, seventy-one million, one hundred thirty-two thousand, three hundred twenty-one".