777161131 has 2 divisors, whose sum is σ = 777161132. Its totient is φ = 777161130.

The previous prime is 777161129. The next prime is 777161141. The reversal of 777161131 is 131161777.

777161131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 777161131 - 2¹ = 777161129 is a prime.

It is a super-2 number, since 2×777161131² = 1207958847074398322, which contains 22 as substring.

Together with 777161129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (777161141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388580565 + 388580566.

It is an arithmetic number, because the mean of its divisors is an integer number (388580566).

Almost surely, 2^777161131 is an apocalyptic number.

777161131 is a deficient number, since it is larger than the sum of its proper divisors (1).

777161131 is an equidigital number, since it uses as much as digits as its factorization.

777161131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6174, while the sum is 34.

The square root of 777161131 is about 27877.6098509180. The cubic root of 777161131 is about 919.3982876254.

The spelling of 777161131 in words is "seven hundred seventy-seven million, one hundred sixty-one thousand, one hundred thirty-one".