1231385759305 has 16 divisors (see below), whose sum is σ = 1591353469440. Its totient is φ = 909317204928.

The previous prime is 1231385759299. The next prime is 1231385759321. The reversal of 1231385759305 is 5039575831321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1231385759305 - 2⁹ = 1231385758793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6526524 + ... + 6712546.

It is an arithmetic number, because the mean of its divisors is an integer number (99459591840).

Almost surely, 2^{1231385759305} is an apocalyptic number.

It is an amenable number.

1231385759305 is a deficient number, since it is larger than the sum of its proper divisors (359967710135).

1231385759305 is a wasteful number, since it uses less digits than its factorization.

1231385759305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287880.

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 1231385759305 in words is "one trillion, two hundred thirty-one billion, three hundred eighty-five million, seven hundred fifty-nine thousand, three hundred five".