2001310145 has 4 divisors (see below), whose sum is σ = 2401572180. Its totient is φ = 1601048112.

The previous prime is 2001310139. The next prime is 2001310153. The reversal of 2001310145 is 5410131002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1411354624 + 589955521 = 37568^2 + 24289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001310145 - 2¹⁴ = 2001293761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200131010 + ... + 200131019.

It is an arithmetic number, because the mean of its divisors is an integer number (600393045).

Almost surely, 2^2001310145 is an apocalyptic number.

It is an amenable number.

2001310145 is a deficient number, since it is larger than the sum of its proper divisors (400262035).

2001310145 is an equidigital number, since it uses as much as digits as its factorization.

2001310145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400262034.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2001310145 is about 44736.0050183295. The cubic root of 2001310145 is about 1260.1961030543.

Adding to 2001310145 its reverse (5410131002), we get a palindrome (7411441147).

The spelling of 2001310145 in words is "two billion, one million, three hundred ten thousand, one hundred forty-five".