1312185348 has 54 divisors (see below), whose sum is σ = 3356583594. Its totient is φ = 432179712.

The previous prime is 1312185313. The next prime is 1312185349. The reversal of 1312185348 is 8435812131.

1312185348 is a `hidden beast` number, since 131 + 2 + 185 + 348 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 163788804 + 1148396544 = 12798^2 + 33888^2 .

It is a super-2 number, since 2×1312185348² = 3443660775011762208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1312185349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2140290 + ... + 2140902.

Almost surely, 2^1312185348 is an apocalyptic number.

1312185348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1312185348 is an abundant number, since it is smaller than the sum of its proper divisors (2044398246).

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

1312185348 is an equidigital number, since it uses as much as digits as its factorization.

1312185348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 715 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1312185348 is about 36224.0989950061. The cubic root of 1312185348 is about 1094.7922843630.

Adding to 1312185348 its reverse (8435812131), we get a palindrome (9747997479).

The spelling of 1312185348 in words is "one billion, three hundred twelve million, one hundred eighty-five thousand, three hundred forty-eight".