831288767882138 has 16 divisors (see below), whose sum is σ = 1259818485964584. Its totient is φ = 411349479045120.

The previous prime is 831288767882099. The next prime is 831288767882171.

831288767882138 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 822202118320489 + 9086649561649 = 28674067^2 + 3014407^2 .

It is a super-2 number, since 2×831288767882138² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43545245 + ... + 59655392.

Almost surely, 2^{831288767882138} is an apocalyptic number.

831288767882138 is a deficient number, since it is larger than the sum of its proper divisors (428529718082446).

831288767882138 is a wasteful number, since it uses less digits than its factorization.

831288767882138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103242257.

The product of its digits is 2774532096, while the sum is 80.

The spelling of 831288767882138 in words is "eight hundred thirty-one trillion, two hundred eighty-eight billion, seven hundred sixty-seven million, eight hundred eighty-two thousand, one hundred thirty-eight".