2311055551 has 6 divisors (see below), whose sum is σ = 2688370800. Its totient is φ = 1980904716.

The previous prime is 2311055473. The next prime is 2311055563. The reversal of 2311055551 is 1555501132.

It is not a de Polignac number, because 2311055551 - 2⁷ = 2311055423 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 (2311095551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23582151 + ... + 23582248.

It is an arithmetic number, because the mean of its divisors is an integer number (448061800).

Almost surely, 2^2311055551 is an apocalyptic number.

2311055551 is a deficient number, since it is larger than the sum of its proper divisors (377315249).

2311055551 is an equidigital number, since it uses as much as digits as its factorization.

2311055551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47164413 (or 47164406 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 2311055551 is about 48073.4391426284. The cubic root of 2311055551 is about 1322.1177268566.

Adding to 2311055551 its reverse (1555501132), we get a palindrome (3866556683).

The spelling of 2311055551 in words is "two billion, three hundred eleven million, fifty-five thousand, five hundred fifty-one".