1431312505205 has 8 divisors (see below), whose sum is σ = 1873718188704. Its totient is φ = 1040954549200.

The previous prime is 1431312505151. The next prime is 1431312505229. The reversal of 1431312505205 is 5025052131341.

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

It is not a de Polignac number, because 1431312505205 - 2⁸ = 1431312504949 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 7 ways as a sum of consecutive naturals, for example, 13011931811 + ... + 13011931920.

It is an arithmetic number, because the mean of its divisors is an integer number (234214773588).

Almost surely, 2^{1431312505205} is an apocalyptic number.

It is an amenable number.

1431312505205 is a deficient number, since it is larger than the sum of its proper divisors (442405683499).

1431312505205 is a wasteful number, since it uses less digits than its factorization.

1431312505205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26023863747.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 1431312505205 its reverse (5025052131341), we get a palindrome (6456364636546).

The spelling of 1431312505205 in words is "one trillion, four hundred thirty-one billion, three hundred twelve million, five hundred five thousand, two hundred five".