231346808751281 has 16 divisors (see below), whose sum is σ = 238785793171200. Its totient is φ = 224018770238208.

The previous prime is 231346808751259. The next prime is 231346808751307. The reversal of 231346808751281 is 182157808643132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231346808751281 is a prime.

It is a super-2 number, since 2×231346808751281² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231346808751281.

It is not an unprimeable number, because it can be changed into a prime (231346808751211) 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 in 15 ways as a sum of consecutive naturals, for example, 29559896 + ... + 36557913.

It is an arithmetic number, because the mean of its divisors is an integer number (14924112073200).

Almost surely, 2^{231346808751281} is an apocalyptic number.

It is an amenable number.

231346808751281 is a deficient number, since it is larger than the sum of its proper divisors (7438984419919).

231346808751281 is a wasteful number, since it uses less digits than its factorization.

231346808751281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66118648.

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 231346808751281 in words is "two hundred thirty-one trillion, three hundred forty-six billion, eight hundred eight million, seven hundred fifty-one thousand, two hundred eighty-one".