1312689348 has 48 divisors (see below), whose sum is σ = 3460968000. Its totient is φ = 430144704.

The previous prime is 1312689341. The next prime is 1312689349. The reversal of 1312689348 is 8439862131.

It is not an unprimeable number, because it can be changed into a prime (1312689341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96633 + ... + 109376.

It is an arithmetic number, because the mean of its divisors is an integer number (72103500).

Almost surely, 2^1312689348 is an apocalyptic number.

1312689348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1312689348 is an abundant number, since it is smaller than the sum of its proper divisors (2148278652).

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

1312689348 is a wasteful number, since it uses less digits than its factorization.

1312689348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206081 (or 206073 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 1312689348 is about 36231.0550219008. The cubic root of 1312689348 is about 1094.9324334365.

The spelling of 1312689348 in words is "one billion, three hundred twelve million, six hundred eighty-nine thousand, three hundred forty-eight".