31130313202 has 8 divisors (see below), whose sum is σ = 46755880236. Its totient is φ = 15545019792.

The previous prime is 31130313199. The next prime is 31130313209. The reversal of 31130313202 is 20231303113.

It can be written as a sum of positive squares in 2 ways, for example, as 30206092401 + 924220801 = 173799^2 + 30401^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 31130313202.

It is not an unprimeable number, because it can be changed into a prime (31130313209) 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, 10066473 + ... + 10069564.

Almost surely, 2^31130313202 is an apocalyptic number.

31130313202 is a deficient number, since it is larger than the sum of its proper divisors (15625567034).

31130313202 is a wasteful number, since it uses less digits than its factorization.

31130313202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20136812.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31130313202 its reverse (20231303113), we get a palindrome (51361616315).

The spelling of 31130313202 in words is "thirty-one billion, one hundred thirty million, three hundred thirteen thousand, two hundred two".