31020002130213 has 6 divisors (see below), whose sum is σ = 44806669743654. Its totient is φ = 20680001420136.

The previous prime is 31020002130209. The next prime is 31020002130223. The reversal of 31020002130213 is 31203120002013.

31020002130213 is a `hidden beast` number, since 310 + 20 + 0 + 0 + 21 + 302 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29355081589089 + 1664920541124 = 5418033^2 + 1290318^2 .

It is not a de Polignac number, because 31020002130213 - 2² = 31020002130209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020002130223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1723333451670 + ... + 1723333451687.

It is an arithmetic number, because the mean of its divisors is an integer number (7467778290609).

Almost surely, 2^{31020002130213} is an apocalyptic number.

It is an amenable number.

31020002130213 is a deficient number, since it is larger than the sum of its proper divisors (13786667613441).

31020002130213 is a wasteful number, since it uses less digits than its factorization.

31020002130213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446666903363 (or 3446666903360 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31020002130213 its reverse (31203120002013), we get a palindrome (62223122132226).

The spelling of 31020002130213 in words is "thirty-one trillion, twenty billion, two million, one hundred thirty thousand, two hundred thirteen".