1231133202105 has 64 divisors (see below), whose sum is σ = 2044593487872. Its totient is φ = 632285498880.

The previous prime is 1231133202097. The next prime is 1231133202119. The reversal of 1231133202105 is 5012023311321.

It is a happy number.

It is not a de Polignac number, because 1231133202105 - 2³ = 1231133202097 is a prime.

It is a super-2 number, since 2×1231133202105² (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 63 ways as a sum of consecutive naturals, for example, 7930864 + ... + 8084606.

It is an arithmetic number, because the mean of its divisors is an integer number (31946773248).

Almost surely, 2^{1231133202105} is an apocalyptic number.

1231133202105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1231133202105 is a deficient number, since it is larger than the sum of its proper divisors (813460285767).

1231133202105 is a wasteful number, since it uses less digits than its factorization.

1231133202105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153998.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 1231133202105 its reverse (5012023311321), we get a palindrome (6243156513426).

The spelling of 1231133202105 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-three million, two hundred two thousand, one hundred five".