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2913 = 3971

2913 has 4 divisors (see below), whose sum is σ = 3888. Its totient is φ = 1940.

The previous prime is 2909. The next prime is 2917. The reversal of 2913 is 3192.

Added to its reverse (3192) it gives a triangular number (6105 = T110).

2913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (2909) and next prime (2917).

It is a cyclic number.

It is not a de Polignac number, because 2913 - 22 = 2909 is a prime.

It is a D-number.

It is a Curzon number.

2913 is a lucky number.

It is a nialpdrome in base 8 and base 16.

It is a junction number, because it is equal to n+sod(n) for n = 2892 and 2901.

It is not an unprimeable number, because it can be changed into a prime (2917) 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, 483 + ... + 488.

It is an arithmetic number, because the mean of its divisors is an integer number (972).

It is an amenable number.

2913 is a deficient number, since it is larger than the sum of its proper divisors (975).

2913 is an equidigital number, since it uses as much as digits as its factorization.

2913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its digits is 54, while the sum is 15.

The square root of 2913 is about 53.9722150741. The cubic root of 2913 is about 14.2817084006.

Adding to 2913 its reverse (3192), we get a triangular number (6105 = T110).

The spelling of 2913 in words is "two thousand, nine hundred thirteen".

Divisors: 1 3 971 2913