2145313 has 4 divisors (see below), whose sum is σ = 2195248. Its totient is φ = 2095380.

The previous prime is 2145307. The next prime is 2145329. The reversal of 2145313 is 3135412.

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 2145313 - 2⁹ = 2144801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145343) 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, 24903 + ... + 24988.

It is an arithmetic number, because the mean of its divisors is an integer number (548812).

2^2145313 is an apocalyptic number.

It is an amenable number.

2145313 is a deficient number, since it is larger than the sum of its proper divisors (49935).

2145313 is an equidigital number, since it uses as much as digits as its factorization.

2145313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49934.

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

The square root of 2145313 is about 1464.6887041279. The cubic root of 2145313 is about 128.9724316627.

Subtracting 2145313 from its reverse (3135412), we obtain a palindrome (990099).

The spelling of 2145313 in words is "two million, one hundred forty-five thousand, three hundred thirteen".