2145000313 has 4 divisors (see below), whose sum is σ = 2271176820. Its totient is φ = 2018823808.

The previous prime is 2145000287. The next prime is 2145000331. The reversal of 2145000313 is 3130005412.

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 1588181904 + 556818409 = 39852^2 + 23597^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145000313 - 2⁵ = 2145000281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145000343) 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, 63088228 + ... + 63088261.

It is an arithmetic number, because the mean of its divisors is an integer number (567794205).

Almost surely, 2^2145000313 is an apocalyptic number.

It is an amenable number.

2145000313 is a deficient number, since it is larger than the sum of its proper divisors (126176507).

2145000313 is a wasteful number, since it uses less digits than its factorization.

2145000313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126176506.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2145000313 is about 46314.1480867348. The cubic root of 2145000313 is about 1289.6616529467.

Adding to 2145000313 its reverse (3130005412), we get a palindrome (5275005725).

The spelling of 2145000313 in words is "two billion, one hundred forty-five million, three hundred thirteen", and thus it is an aban number.