249043313 has 4 divisors (see below), whose sum is σ = 252195840. Its totient is φ = 245890788.

The previous prime is 249043303. The next prime is 249043321. The reversal of 249043313 is 313340942.

249043313 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 a cyclic number.

It is not a de Polignac number, because 249043313 - 2¹⁰ = 249042289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249043303) 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, 1576145 + ... + 1576302.

It is an arithmetic number, because the mean of its divisors is an integer number (63048960).

Almost surely, 2^249043313 is an apocalyptic number.

It is an amenable number.

249043313 is a deficient number, since it is larger than the sum of its proper divisors (3152527).

249043313 is an equidigital number, since it uses as much as digits as its factorization.

249043313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152526.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 249043313 is about 15781.1062033053. The cubic root of 249043313 is about 629.1559310206.

The spelling of 249043313 in words is "two hundred forty-nine million, forty-three thousand, three hundred thirteen".