776085131 has 2 divisors, whose sum is σ = 776085132. Its totient is φ = 776085130.

The previous prime is 776085083. The next prime is 776085133. The reversal of 776085131 is 131580677.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-776085131 is a prime.

It is a super-2 number, since 2×776085131² = 1204616261118574322, which contains 22 as substring.

Together with 776085133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (776085133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388042565 + 388042566.

It is an arithmetic number, because the mean of its divisors is an integer number (388042566).

Almost surely, 2^776085131 is an apocalyptic number.

776085131 is a deficient number, since it is larger than the sum of its proper divisors (1).

776085131 is an equidigital number, since it uses as much as digits as its factorization.

776085131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 776085131 is about 27858.3045248630. The cubic root of 776085131 is about 918.9737812918.

The spelling of 776085131 in words is "seven hundred seventy-six million, eighty-five thousand, one hundred thirty-one".