1312031112 has 64 divisors (see below), whose sum is σ = 3819415680. Its totient is φ = 367790592.

The previous prime is 1312031101. The next prime is 1312031141. The reversal of 1312031112 is 2111302131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1312031091 and 1312031100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64773 + ... + 82580.

It is an arithmetic number, because the mean of its divisors is an integer number (59678370).

Almost surely, 2^1312031112 is an apocalyptic number.

1312031112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312031112 is an abundant number, since it is smaller than the sum of its proper divisors (2507384568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312031112 is a wasteful number, since it uses less digits than its factorization.

1312031112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147422 (or 147418 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1312031112 is about 36221.9700182086. The cubic root of 1312031112 is about 1094.7493882383.

Adding to 1312031112 its reverse (2111302131), we get a palindrome (3423333243).

The spelling of 1312031112 in words is "one billion, three hundred twelve million, thirty-one thousand, one hundred twelve".