31320112130 has 8 divisors (see below), whose sum is σ = 56376201852. Its totient is φ = 12528044848.

The previous prime is 31320112099. The next prime is 31320112139. The reversal of 31320112130 is 3121102313.

It can be written as a sum of positive squares in 2 ways, for example, as 27681971641 + 3638140489 = 166379^2 + 60317^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 31320112099 and 31320112108.

It is not an unprimeable number, because it can be changed into a prime (31320112139) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1566005597 + ... + 1566005616.

Almost surely, 2^31320112130 is an apocalyptic number.

31320112130 is a deficient number, since it is larger than the sum of its proper divisors (25056089722).

31320112130 is a wasteful number, since it uses less digits than its factorization.

31320112130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132011220.

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

Adding to 31320112130 its reverse (3121102313), we get a palindrome (34441214443).

The spelling of 31320112130 in words is "thirty-one billion, three hundred twenty million, one hundred twelve thousand, one hundred thirty".