2642356317 has 4 divisors (see below), whose sum is σ = 3523141760. Its totient is φ = 1761570876.

The previous prime is 2642356313. The next prime is 2642356351. The reversal of 2642356317 is 7136532462.

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 2642356317 - 2² = 2642356313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642356313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440392717 + ... + 440392722.

It is an arithmetic number, because the mean of its divisors is an integer number (880785440).

Almost surely, 2^2642356317 is an apocalyptic number.

It is an amenable number.

2642356317 is a deficient number, since it is larger than the sum of its proper divisors (880785443).

2642356317 is an equidigital number, since it uses as much as digits as its factorization.

2642356317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880785442.

The product of its digits is 181440, while the sum is 39.

The square root of 2642356317 is about 51403.8550791670. The cubic root of 2642356317 is about 1382.4957143269.

Adding to 2642356317 its reverse (7136532462), we get a palindrome (9778888779).

The spelling of 2642356317 in words is "two billion, six hundred forty-two million, three hundred fifty-six thousand, three hundred seventeen".