1312321130 has 8 divisors (see below), whose sum is σ = 2362178052. Its totient is φ = 524928448.

The previous prime is 1312321123. The next prime is 1312321139. The reversal of 1312321130 is 311232131.

It can be written as a sum of positive squares in 2 ways, for example, as 1155796009 + 156525121 = 33997^2 + 12511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1312321099 and 1312321108.

It is not an unprimeable number, because it can be changed into a prime (1312321139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65616047 + ... + 65616066.

Almost surely, 2^1312321130 is an apocalyptic number.

1312321130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312321130 is a deficient number, since it is larger than the sum of its proper divisors (1049856922).

1312321130 is a wasteful number, since it uses less digits than its factorization.

1312321130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131232120.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1312321130 is about 36225.9731408281. The cubic root of 1312321130 is about 1094.8300452782.

Adding to 1312321130 its reverse (311232131), we get a palindrome (1623553261).

The spelling of 1312321130 in words is "one billion, three hundred twelve million, three hundred twenty-one thousand, one hundred thirty".