20013220000031 has 8 divisors (see below), whose sum is σ = 20352235998528. Its totient is φ = 19674556596000.

The previous prime is 20013219999991. The next prime is 20013220000051. The reversal of 20013220000031 is 13000002231002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20013220000031 - 2⁶ = 20013219999967 is a prime.

It is a super-2 number, since 2×20013220000031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20013219999970 and 20013220000015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013220000051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88034135 + ... + 88261176.

It is an arithmetic number, because the mean of its divisors is an integer number (2544029499816).

Almost surely, 2^{20013220000031} is an apocalyptic number.

20013220000031 is a deficient number, since it is larger than the sum of its proper divisors (339015998497).

20013220000031 is a wasteful number, since it uses less digits than its factorization.

20013220000031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176297233.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20013220000031 its reverse (13000002231002), we get a palindrome (33013222231033).

The spelling of 20013220000031 in words is "twenty trillion, thirteen billion, two hundred twenty million, thirty-one", and thus it is an aban number.