1231830487805 has 16 divisors (see below), whose sum is σ = 1515218310144. Its totient is φ = 960937983360.

The previous prime is 1231830487777. The next prime is 1231830487829. The reversal of 1231830487805 is 5087840381321.

It is not a de Polignac number, because 1231830487805 - 2⁸ = 1231830487549 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 9607592 + ... + 9734961.

It is an arithmetic number, because the mean of its divisors is an integer number (94701144384).

Almost surely, 2^{1231830487805} is an apocalyptic number.

It is an amenable number.

1231830487805 is a deficient number, since it is larger than the sum of its proper divisors (283387822339).

1231830487805 is a wasteful number, since it uses less digits than its factorization.

1231830487805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19342876.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 1231830487805 in words is "one trillion, two hundred thirty-one billion, eight hundred thirty million, four hundred eighty-seven thousand, eight hundred five".