2518242313 has 4 divisors (see below), whose sum is σ = 2599475968. Its totient is φ = 2437008660.

The previous prime is 2518242301. The next prime is 2518242319. The reversal of 2518242313 is 3132428152.

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 2518242313 - 2⁹ = 2518241801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 81233623 = 2518242313 / (2 + 5 + 1 + 8 + 2 + 4 + 2 + 3 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2518242319) 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, 40616781 + ... + 40616842.

It is an arithmetic number, because the mean of its divisors is an integer number (649868992).

Almost surely, 2^2518242313 is an apocalyptic number.

It is an amenable number.

2518242313 is a deficient number, since it is larger than the sum of its proper divisors (81233655).

2518242313 is an equidigital number, since it uses as much as digits as its factorization.

2518242313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81233654.

The product of its digits is 11520, while the sum is 31.

The square root of 2518242313 is about 50182.0915566500. The cubic root of 2518242313 is about 1360.5019616591.

The spelling of 2518242313 in words is "two billion, five hundred eighteen million, two hundred forty-two thousand, three hundred thirteen".