1012320001 has 32 divisors (see below), whose sum is σ = 1281761280. Its totient is φ = 783121680.

The previous prime is 1012319977. The next prime is 1012320011. The reversal of 1012320001 is 1000232101.

It is not a de Polignac number, because 1012320001 - 2¹⁵ = 1012287233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012320001.

It is not an unprimeable number, because it can be changed into a prime (1012320011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1667440 + ... + 1668046.

It is an arithmetic number, because the mean of its divisors is an integer number (40055040).

Almost surely, 2^1012320001 is an apocalyptic number.

1012320001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012320001 is a deficient number, since it is larger than the sum of its proper divisors (269441279).

1012320001 is an equidigital number, since it uses as much as digits as its factorization.

1012320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1012320001 is about 31816.9766162657. The cubic root of 1012320001 is about 1004.0899167762.

Adding to 1012320001 its reverse (1000232101), we get a palindrome (2012552102).

The spelling of 1012320001 in words is "one billion, twelve million, three hundred twenty thousand, one".