2301813 has 6 divisors (see below), whose sum is σ = 3324854. Its totient is φ = 1534536.

The previous prime is 2301811. The next prime is 2301821. The reversal of 2301813 is 3181032.

It can be written as a sum of positive squares in only one way, i.e., 1205604 + 1096209 = 1098^2 + 1047^2 .

It is not a de Polignac number, because 2301813 - 2¹ = 2301811 is a prime.

It is a Duffinian number.

2301813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2301811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127870 + ... + 127887.

2^2301813 is an apocalyptic number.

It is an amenable number.

2301813 is a deficient number, since it is larger than the sum of its proper divisors (1023041).

2301813 is a wasteful number, since it uses less digits than its factorization.

2301813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255763 (or 255760 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2301813 is about 1517.1726994644. The cubic root of 2301813 is about 132.0352867094.

Adding to 2301813 its reverse (3181032), we get a palindrome (5482845).

The spelling of 2301813 in words is "two million, three hundred one thousand, eight hundred thirteen".