1312140630 has 64 divisors (see below), whose sum is σ = 3232244736. Its totient is φ = 340704000.

The previous prime is 1312140629. The next prime is 1312140659. The reversal of 1312140630 is 360412131.

It is a junction number, because it is equal to n+sod(n) for n = 1312140597 and 1312140606.

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 31 ways as a sum of consecutive naturals, for example, 1119945 + ... + 1121115.

It is an arithmetic number, because the mean of its divisors is an integer number (50503824).

Almost surely, 2^1312140630 is an apocalyptic number.

1312140630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312140630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616122368).

1312140630 is an abundant number, since it is smaller than the sum of its proper divisors (1920104106).

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

1312140630 is a wasteful number, since it uses less digits than its factorization.

1312140630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1312140630 is about 36223.4817487221. The cubic root of 1312140630 is about 1094.7798477364.

Adding to 1312140630 its reverse (360412131), we get a palindrome (1672552761).

The spelling of 1312140630 in words is "one billion, three hundred twelve million, one hundred forty thousand, six hundred thirty".