1312031105 has 24 divisors (see below), whose sum is σ = 1997991360. Its totient is φ = 817887840.

The previous prime is 1312031101. The next prime is 1312031141. The reversal of 1312031105 is 5011302131.

1312031105 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1312031105 - 2² = 1312031101 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1312031101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240725 + ... + 246114.

It is an arithmetic number, because the mean of its divisors is an integer number (83249640).

Almost surely, 2^1312031105 is an apocalyptic number.

It is an amenable number.

1312031105 is a deficient number, since it is larger than the sum of its proper divisors (685960255).

1312031105 is a wasteful number, since it uses less digits than its factorization.

1312031105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486869 (or 486862 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1312031105 is about 36221.9699215821. The cubic root of 1312031105 is about 1094.7493862914.

Adding to 1312031105 its reverse (5011302131), we get a palindrome (6323333236).

The spelling of 1312031105 in words is "one billion, three hundred twelve million, thirty-one thousand, one hundred five".