1312305112 has 24 divisors (see below), whose sum is σ = 2572213140. Its totient is φ = 627622160.

The previous prime is 1312305109. The next prime is 1312305119. The reversal of 1312305112 is 2115032131.

It is a self number, because there is not a number n which added to its sum of digits gives 1312305112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312305119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 150814 + ... + 159277.

Almost surely, 2^1312305112 is an apocalyptic number.

It is an amenable number.

1312305112 is a deficient number, since it is larger than the sum of its proper divisors (1259908028).

1312305112 is a wasteful number, since it uses less digits than its factorization.

1312305112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310143 (or 310116 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1312305112 is about 36225.7520556855. The cubic root of 1312305112 is about 1094.8255908148.

Adding to 1312305112 its reverse (2115032131), we get a palindrome (3427337243).

The spelling of 1312305112 in words is "one billion, three hundred twelve million, three hundred five thousand, one hundred twelve".