1280723063231 has 4 divisors (see below), whose sum is σ = 1322036710464. Its totient is φ = 1239409416000.

The previous prime is 1280723063227. The next prime is 1280723063287. The reversal of 1280723063231 is 1323603270821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1280723063231 - 2² = 1280723063227 is a prime.

It is a super-2 number, since 2×1280723063231² (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 (1280723063831) 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 3 ways as a sum of consecutive naturals, for example, 20656823570 + ... + 20656823631.

It is an arithmetic number, because the mean of its divisors is an integer number (330509177616).

Almost surely, 2^{1280723063231} is an apocalyptic number.

1280723063231 is a deficient number, since it is larger than the sum of its proper divisors (41313647233).

1280723063231 is an equidigital number, since it uses as much as digits as its factorization.

1280723063231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41313647232.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 1280723063231 in words is "one trillion, two hundred eighty billion, seven hundred twenty-three million, sixty-three thousand, two hundred thirty-one".