20100031020213 has 16 divisors (see below), whose sum is σ = 26854235640000. Its totient is φ = 13372924515840.

The previous prime is 20100031020193. The next prime is 20100031020227. The reversal of 20100031020213 is 31202013000102.

It is not a de Polignac number, because 20100031020213 - 2⁶ = 20100031020149 is a prime.

It is a super-2 number, since 2×20100031020213² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20100031020192 and 20100031020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100031020313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126430533 + ... + 126589413.

It is an arithmetic number, because the mean of its divisors is an integer number (1678389727500).

Almost surely, 2^{20100031020213} is an apocalyptic number.

It is an amenable number.

20100031020213 is a deficient number, since it is larger than the sum of its proper divisors (6754204619787).

20100031020213 is a wasteful number, since it uses less digits than its factorization.

20100031020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243892.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20100031020213 its reverse (31202013000102), we get a palindrome (51302044020315).

The spelling of 20100031020213 in words is "twenty trillion, one hundred billion, thirty-one million, twenty thousand, two hundred thirteen".