20540335223131 has 8 divisors (see below), whose sum is σ = 20555736024384. Its totient is φ = 20524936139400.

The previous prime is 20540335223099. The next prime is 20540335223147. The reversal of 20540335223131 is 13132253304502.

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 20540335223131 - 2⁵ = 20540335223099 is a prime.

It is a super-2 number, since 2×20540335223131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20540335223731) 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, 24018960 + ... + 24859426.

It is an arithmetic number, because the mean of its divisors is an integer number (2569467003048).

Almost surely, 2^{20540335223131} is an apocalyptic number.

20540335223131 is a deficient number, since it is larger than the sum of its proper divisors (15400801253).

20540335223131 is a wasteful number, since it uses less digits than its factorization.

20540335223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858761.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 20540335223131 its reverse (13132253304502), we get a palindrome (33672588527633).

The spelling of 20540335223131 in words is "twenty trillion, five hundred forty billion, three hundred thirty-five million, two hundred twenty-three thousand, one hundred thirty-one".