787288821131 has 2 divisors, whose sum is σ = 787288821132. Its totient is φ = 787288821130.

The previous prime is 787288821113. The next prime is 787288821133. The reversal of 787288821131 is 131128882787.

Together with previous prime (787288821113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-787288821131 is a prime.

It is a super-2 number, since 2×787288821131² (a number of 25 digits) contains 22 as substring.

Together with 787288821133, 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 (787288821133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393644410565 + 393644410566.

It is an arithmetic number, because the mean of its divisors is an integer number (393644410566).

Almost surely, 2^787288821131 is an apocalyptic number.

787288821131 is a deficient number, since it is larger than the sum of its proper divisors (1).

787288821131 is an equidigital number, since it uses as much as digits as its factorization.

787288821131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2408448, while the sum is 56.

The spelling of 787288821131 in words is "seven hundred eighty-seven billion, two hundred eighty-eight million, eight hundred twenty-one thousand, one hundred thirty-one".