231831063326878 has 4 divisors (see below), whose sum is σ = 347746594990320. Its totient is φ = 115915531663438.

The previous prime is 231831063326813. The next prime is 231831063326897. The reversal of 231831063326878 is 878623360138132.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 57957765831718 + ... + 57957765831721.

It is an arithmetic number, because the mean of its divisors is an integer number (86936648747580).

Almost surely, 2^{231831063326878} is an apocalyptic number.

231831063326878 is a deficient number, since it is larger than the sum of its proper divisors (115915531663442).

231831063326878 is a wasteful number, since it uses less digits than its factorization.

231831063326878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115915531663441.

The product of its (nonzero) digits is 41803776, while the sum is 61.

The spelling of 231831063326878 in words is "two hundred thirty-one trillion, eight hundred thirty-one billion, sixty-three million, three hundred twenty-six thousand, eight hundred seventy-eight".