6311233861 has 2 divisors, whose sum is σ = 6311233862. Its totient is φ = 6311233860.

The previous prime is 6311233849. The next prime is 6311233897. The reversal of 6311233861 is 1683321136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5986116900 + 325116961 = 77370^2 + 18031^2 .

It is a cyclic number.

It is not a de Polignac number, because 6311233861 - 2⁵ = 6311233829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6311233801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3155616930 + 3155616931.

It is an arithmetic number, because the mean of its divisors is an integer number (3155616931).

Almost surely, 2^6311233861 is an apocalyptic number.

It is an amenable number.

6311233861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6311233861 is an equidigital number, since it uses as much as digits as its factorization.

6311233861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 6311233861 is about 79443.2744856353. The cubic root of 6311233861 is about 1848.0118755015.

Adding to 6311233861 its reverse (1683321136), we get a palindrome (7994554997).

The spelling of 6311233861 in words is "six billion, three hundred eleven million, two hundred thirty-three thousand, eight hundred sixty-one".