8131211071830 has 192 divisors, whose sum is σ = 26918601136128. Its totient is φ = 1653653249280.

The previous prime is 8131211071811. The next prime is 8131211071853. The reversal of 8131211071830 is 381701121318.

It is a super-2 number, since 2×8131211071830² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12156577 + ... + 12807996.

It is an arithmetic number, because the mean of its divisors is an integer number (140201047584).

Almost surely, 2^{8131211071830} is an apocalyptic number.

8131211071830 is an abundant number, since it is smaller than the sum of its proper divisors (18787390064298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8131211071830 is a wasteful number, since it uses less digits than its factorization.

8131211071830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24964651 (or 24964648 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 8131211071830 in words is "eight trillion, one hundred thirty-one billion, two hundred eleven million, seventy-one thousand, eight hundred thirty".