1312340412 has 36 divisors (see below), whose sum is σ = 3231785256. Its totient is φ = 414421920.

The previous prime is 1312340401. The next prime is 1312340443. The reversal of 1312340412 is 2140432131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147139 + ... + 155802.

Almost surely, 2^1312340412 is an apocalyptic number.

1312340412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312340412 is an abundant number, since it is smaller than the sum of its proper divisors (1919444844).

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

1312340412 is a wasteful number, since it uses less digits than its factorization.

1312340412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302986 (or 302965 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1312340412 is about 36226.2392748682. The cubic root of 1312340412 is about 1094.8354073828.

Adding to 1312340412 its reverse (2140432131), we get a palindrome (3452772543).

It can be divided in two parts, 13123 and 40412, that added together give a palindrome (53535).

The spelling of 1312340412 in words is "one billion, three hundred twelve million, three hundred forty thousand, four hundred twelve".