1312613412 has 24 divisors (see below), whose sum is σ = 3341198112. Its totient is φ = 397761600.

The previous prime is 1312613411. The next prime is 1312613431. The reversal of 1312613412 is 2143162131.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1312613411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4971889 + ... + 4972152.

It is an arithmetic number, because the mean of its divisors is an integer number (139216588).

Almost surely, 2^1312613412 is an apocalyptic number.

1312613412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312613412 is an abundant number, since it is smaller than the sum of its proper divisors (2028584700).

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

1312613412 is a wasteful number, since it uses less digits than its factorization.

1312613412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9944059 (or 9944057 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 1312613412 is about 36230.0070659667. The cubic root of 1312613412 is about 1094.9113199383.

Adding to 1312613412 its reverse (2143162131), we get a palindrome (3455775543).

The spelling of 1312613412 in words is "one billion, three hundred twelve million, six hundred thirteen thousand, four hundred twelve".