1281630208231 has 8 divisors (see below), whose sum is σ = 1286426712384. Its totient is φ = 1276834199040.

The previous prime is 1281630208207. The next prime is 1281630208241. The reversal of 1281630208231 is 1328020361821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1281630208231 - 2¹¹ = 1281630206183 is a prime.

It is a super-2 number, since 2×1281630208231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281630208241) 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 7 ways as a sum of consecutive naturals, for example, 5549931 + ... + 5776243.

It is an arithmetic number, because the mean of its divisors is an integer number (160803339048).

Almost surely, 2^{1281630208231} is an apocalyptic number.

1281630208231 is a deficient number, since it is larger than the sum of its proper divisors (4796504153).

1281630208231 is a wasteful number, since it uses less digits than its factorization.

1281630208231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247481.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 1281630208231 in words is "one trillion, two hundred eighty-one billion, six hundred thirty million, two hundred eight thousand, two hundred thirty-one".