6311388261 has 16 divisors (see below), whose sum is σ = 8911819584. Its totient is φ = 3959364864.

The previous prime is 6311388221. The next prime is 6311388263. The reversal of 6311388261 is 1628831136.

It is not a de Polignac number, because 6311388261 - 2⁷ = 6311388133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6311388263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473490 + ... + 486636.

It is an arithmetic number, because the mean of its divisors is an integer number (556988724).

Almost surely, 2^6311388261 is an apocalyptic number.

It is an amenable number.

6311388261 is a deficient number, since it is larger than the sum of its proper divisors (2600431323).

6311388261 is a wasteful number, since it uses less digits than its factorization.

6311388261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22580.

The product of its digits is 41472, while the sum is 39.

The square root of 6311388261 is about 79444.2462422547. The cubic root of 6311388261 is about 1848.0269454922.

The spelling of 6311388261 in words is "six billion, three hundred eleven million, three hundred eighty-eight thousand, two hundred sixty-one".