1231503635105 has 8 divisors (see below), whose sum is σ = 1555583539200. Its totient is φ = 933350123376.

The previous prime is 1231503635093. The next prime is 1231503635129. The reversal of 1231503635105 is 5015363051321.

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

It is not a de Polignac number, because 1231503635105 - 2³⁰ = 1230429893281 is a prime.

It is a super-2 number, since 2×1231503635105² (a number of 25 digits) contains 22 as substring.

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, 6481597985 + ... + 6481598174.

It is an arithmetic number, because the mean of its divisors is an integer number (194447942400).

Almost surely, 2^{1231503635105} is an apocalyptic number.

It is an amenable number.

1231503635105 is a deficient number, since it is larger than the sum of its proper divisors (324079904095).

1231503635105 is a wasteful number, since it uses less digits than its factorization.

1231503635105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12963196183.

The product of its (nonzero) digits is 40500, while the sum is 35.

Adding to 1231503635105 its reverse (5015363051321), we get a palindrome (6246866686426).

The spelling of 1231503635105 in words is "one trillion, two hundred thirty-one billion, five hundred three million, six hundred thirty-five thousand, one hundred five".