20031311113313 has 4 divisors (see below), whose sum is σ = 20033762634288. Its totient is φ = 20028859592340.

The previous prime is 20031311113291. The next prime is 20031311113337. The reversal of 20031311113313 is 31331111313002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20031311113313 - 2⁶ = 20031311113249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20031311103313) 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, 1225748231 + ... + 1225764572.

It is an arithmetic number, because the mean of its divisors is an integer number (5008440658572).

Almost surely, 2^{20031311113313} is an apocalyptic number.

It is an amenable number.

20031311113313 is a deficient number, since it is larger than the sum of its proper divisors (2451520975).

20031311113313 is an equidigital number, since it uses as much as digits as its factorization.

20031311113313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451520974.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 20031311113313 its reverse (31331111313002), we get a palindrome (51362422426315).

The spelling of 20031311113313 in words is "twenty trillion, thirty-one billion, three hundred eleven million, one hundred thirteen thousand, three hundred thirteen".