20201320031 has 8 divisors (see below), whose sum is σ = 21393700560. Its totient is φ = 19009391488.

The previous prime is 20201320019. The next prime is 20201320033. The reversal of 20201320031 is 13002310202.

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 20201320031 - 2⁶ = 20201319967 is a prime.

It is a super-2 number, since 2×20201320031² (a number of 21 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 = 20201319988 and 20201320015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201320033) 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, 18716 + ... + 201873.

It is an arithmetic number, because the mean of its divisors is an integer number (2674212570).

Almost surely, 2^20201320031 is an apocalyptic number.

20201320031 is a deficient number, since it is larger than the sum of its proper divisors (1192380529).

20201320031 is a wasteful number, since it uses less digits than its factorization.

20201320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225993.

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

Adding to 20201320031 its reverse (13002310202), we get a palindrome (33203630233).

The spelling of 20201320031 in words is "twenty billion, two hundred one million, three hundred twenty thousand, thirty-one".