1240241313 has 4 divisors (see below), whose sum is σ = 1653655088. Its totient is φ = 826827540.

The previous prime is 1240241293. The next prime is 1240241323. The reversal of 1240241313 is 3131420421.

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 not a de Polignac number, because 1240241313 - 2⁵ = 1240241281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240241313.

It is not an unprimeable number, because it can be changed into a prime (1240241323) 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, 206706883 + ... + 206706888.

It is an arithmetic number, because the mean of its divisors is an integer number (413413772).

Almost surely, 2^1240241313 is an apocalyptic number.

It is an amenable number.

1240241313 is a deficient number, since it is larger than the sum of its proper divisors (413413775).

1240241313 is an equidigital number, since it uses as much as digits as its factorization.

1240241313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413413774.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1240241313 is about 35217.0599709857. The cubic root of 1240241313 is about 1074.4067577325.

Adding to 1240241313 its reverse (3131420421), we get a palindrome (4371661734).

The spelling of 1240241313 in words is "one billion, two hundred forty million, two hundred forty-one thousand, three hundred thirteen".