1320331001 has 4 divisors (see below), whose sum is σ = 1440361104. Its totient is φ = 1200300900.

The previous prime is 1320330961. The next prime is 1320331009. The reversal of 1320331001 is 1001330231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320331001 - 2¹⁸ = 1320068857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320331009) 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, 60015035 + ... + 60015056.

It is an arithmetic number, because the mean of its divisors is an integer number (360090276).

Almost surely, 2^1320331001 is an apocalyptic number.

1320331001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1320331001 is a deficient number, since it is larger than the sum of its proper divisors (120030103).

1320331001 is a wasteful number, since it uses less digits than its factorization.

1320331001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120030102.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1320331001 is about 36336.3592149791. The cubic root of 1320331001 is about 1097.0529935535.

Adding to 1320331001 its reverse (1001330231), we get a palindrome (2321661232).

The spelling of 1320331001 in words is "one billion, three hundred twenty million, three hundred thirty-one thousand, one".