2311808642 has 32 divisors (see below), whose sum is σ = 4119776640. Its totient is φ = 959080320.

The previous prime is 2311808567. The next prime is 2311808651. The reversal of 2311808642 is 2468081132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19958 + ... + 70865.

It is an arithmetic number, because the mean of its divisors is an integer number (128743020).

Almost surely, 2^2311808642 is an apocalyptic number.

2311808642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2311808642 is a deficient number, since it is larger than the sum of its proper divisors (1807967998).

2311808642 is a wasteful number, since it uses less digits than its factorization.

2311808642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90938.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 2311808642 is about 48081.2712186356. The cubic root of 2311808642 is about 1322.2613216783.

Adding to 2311808642 its reverse (2468081132), we get a palindrome (4779889774).

The spelling of 2311808642 in words is "two billion, three hundred eleven million, eight hundred eight thousand, six hundred forty-two".