20031013120313 has 4 divisors (see below), whose sum is σ = 21571860283428. Its totient is φ = 18490165957200.

The previous prime is 20031013120291. The next prime is 20031013120319. The reversal of 20031013120313 is 31302131013002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5896699169344 + 14134313950969 = 2428312^2 + 3759563^2 .

It is a cyclic number.

It is not a de Polignac number, because 20031013120313 - 2¹⁴ = 20031013103929 is a prime.

It is a super-2 number, since 2×20031013120313² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20031013120319) 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, 770423581538 + ... + 770423581563.

It is an arithmetic number, because the mean of its divisors is an integer number (5392965070857).

Almost surely, 2^{20031013120313} is an apocalyptic number.

It is an amenable number.

20031013120313 is a deficient number, since it is larger than the sum of its proper divisors (1540847163115).

20031013120313 is a wasteful number, since it uses less digits than its factorization.

20031013120313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540847163114.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20031013120313 its reverse (31302131013002), we get a palindrome (51333144133315).

The spelling of 20031013120313 in words is "twenty trillion, thirty-one billion, thirteen million, one hundred twenty thousand, three hundred thirteen".