1312146612 has 144 divisors (see below), whose sum is σ = 4015065600. Its totient is φ = 352952640.

The previous prime is 1312146587. The next prime is 1312146613. The reversal of 1312146612 is 2166412131.

It is a happy number.

1312146612 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 1 + 46 + 612 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312146613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 856287 + ... + 857817.

It is an arithmetic number, because the mean of its divisors is an integer number (27882400).

Almost surely, 2^1312146612 is an apocalyptic number.

1312146612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312146612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007532800).

1312146612 is an abundant number, since it is smaller than the sum of its proper divisors (2702918988).

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

1312146612 is a wasteful number, since it uses less digits than its factorization.

1312146612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1741 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1312146612 is about 36223.5643193764. The cubic root of 1312146612 is about 1094.7815114207.

Adding to 1312146612 its reverse (2166412131), we get a palindrome (3478558743).

The spelling of 1312146612 in words is "one billion, three hundred twelve million, one hundred forty-six thousand, six hundred twelve".