1312105630 has 32 divisors (see below), whose sum is σ = 2625123168. Its totient is φ = 468124800.

The previous prime is 1312105607. The next prime is 1312105643. The reversal of 1312105630 is 365012131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106701 + ... + 118360.

It is an arithmetic number, because the mean of its divisors is an integer number (82035099).

Almost surely, 2^1312105630 is an apocalyptic number.

1312105630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312105630 is an abundant number, since it is smaller than the sum of its proper divisors (1313017538).

1312105630 is a wasteful number, since it uses less digits than its factorization.

1312105630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225132.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1312105630 is about 36222.9986334649. The cubic root of 1312105630 is about 1094.7701136082.

Adding to 1312105630 its reverse (365012131), we get a palindrome (1677117761).

The spelling of 1312105630 in words is "one billion, three hundred twelve million, one hundred five thousand, six hundred thirty".