787388106831 has 16 divisors (see below), whose sum is σ = 1058302107648. Its totient is φ = 520701199200.

The previous prime is 787388106823. The next prime is 787388106913. The reversal of 787388106831 is 138601883787.

It is not a de Polignac number, because 787388106831 - 2³ = 787388106823 is a prime.

It is a super-2 number, since 2×787388106831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787388106331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2040286 + ... + 2395316.

It is an arithmetic number, because the mean of its divisors is an integer number (66143881728).

Almost surely, 2^787388106831 is an apocalyptic number.

787388106831 is a deficient number, since it is larger than the sum of its proper divisors (270914000817).

787388106831 is a wasteful number, since it uses less digits than its factorization.

787388106831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360982.

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 787388106831 in words is "seven hundred eighty-seven billion, three hundred eighty-eight million, one hundred six thousand, eight hundred thirty-one".