1321031001 has 8 divisors (see below), whose sum is σ = 1761585280. Its totient is φ = 880582032.

The previous prime is 1321030981. The next prime is 1321031011. The reversal of 1321031001 is 1001301231.

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

It is not a de Polignac number, because 1321031001 - 2⁶ = 1321030937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321031011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10176 + ... + 52398.

It is an arithmetic number, because the mean of its divisors is an integer number (220198160).

Almost surely, 2^1321031001 is an apocalyptic number.

It is an amenable number.

1321031001 is a deficient number, since it is larger than the sum of its proper divisors (440554279).

1321031001 is a wasteful number, since it uses less digits than its factorization.

1321031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52655.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1321031001 is about 36345.9901639782. The cubic root of 1321031001 is about 1097.2468341946.

Adding to 1321031001 its reverse (1001301231), we get a palindrome (2322332232).

The spelling of 1321031001 in words is "one billion, three hundred twenty-one million, thirty-one thousand, one".