1321403001 has 8 divisors (see below), whose sum is σ = 1762065984. Its totient is φ = 880837680.

The previous prime is 1321402933. The next prime is 1321403023. The reversal of 1321403001 is 1003041231.

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

It is not a de Polignac number, because 1321403001 - 2¹¹ = 1321400953 is a prime.

It is a super-2 number, since 2×1321403001² = 3492211782103612002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321403071) 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, 17380 + ... + 54266.

It is an arithmetic number, because the mean of its divisors is an integer number (220258248).

Almost surely, 2^1321403001 is an apocalyptic number.

It is an amenable number.

1321403001 is a deficient number, since it is larger than the sum of its proper divisors (440662983).

1321403001 is a wasteful number, since it uses less digits than its factorization.

1321403001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48831.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1321403001 is about 36351.1072871240. The cubic root of 1321403001 is about 1097.3498187862.

Adding to 1321403001 its reverse (1003041231), we get a palindrome (2324444232).

The spelling of 1321403001 in words is "one billion, three hundred twenty-one million, four hundred three thousand, one".