20335201131 has 16 divisors (see below), whose sum is σ = 30989081600. Its totient is φ = 11619324288.

The previous prime is 20335201123. The next prime is 20335201177. The reversal of 20335201131 is 13110253302.

It is not a de Polignac number, because 20335201131 - 2³ = 20335201123 is a prime.

It is a super-2 number, since 2×20335201131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20335201098 and 20335201107.

It is not an unprimeable number, because it can be changed into a prime (20335201031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442830 + ... + 486588.

It is an arithmetic number, because the mean of its divisors is an integer number (1936817600).

Almost surely, 2^20335201131 is an apocalyptic number.

20335201131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20335201131 is a deficient number, since it is larger than the sum of its proper divisors (10653880469).

20335201131 is a wasteful number, since it uses less digits than its factorization.

20335201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65898.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 20335201131 its reverse (13110253302), we get a palindrome (33445454433).

The spelling of 20335201131 in words is "twenty billion, three hundred thirty-five million, two hundred one thousand, one hundred thirty-one".