20050140031 has 4 divisors (see below), whose sum is σ = 20741524200. Its totient is φ = 19358755864.

The previous prime is 20050140023. The next prime is 20050140043. The reversal of 20050140031 is 13004105002.

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

It is a cyclic number.

It is not a de Polignac number, because 20050140031 - 2³ = 20050140023 is a prime.

It is a super-2 number, since 2×20050140031² (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 = 20050139987 and 20050140014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050140091) 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, 345692041 + ... + 345692098.

It is an arithmetic number, because the mean of its divisors is an integer number (5185381050).

Almost surely, 2^20050140031 is an apocalyptic number.

20050140031 is a deficient number, since it is larger than the sum of its proper divisors (691384169).

20050140031 is an equidigital number, since it uses as much as digits as its factorization.

20050140031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691384168.

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 20050140031 its reverse (13004105002), we get a palindrome (33054245033).

The spelling of 20050140031 in words is "twenty billion, fifty million, one hundred forty thousand, thirty-one".