20340011131 has 16 divisors (see below), whose sum is σ = 23545853280. Its totient is φ = 17365063680.

The previous prime is 20340011129. The next prime is 20340011137. The reversal of 20340011131 is 13111004302.

It is a cyclic number.

It is not a de Polignac number, because 20340011131 - 2¹ = 20340011129 is a prime.

It is a super-2 number, since 2×20340011131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340011137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33546 + ... + 204463.

It is an arithmetic number, because the mean of its divisors is an integer number (1471615830).

Almost surely, 2^20340011131 is an apocalyptic number.

20340011131 is a deficient number, since it is larger than the sum of its proper divisors (3205842149).

20340011131 is a wasteful number, since it uses less digits than its factorization.

20340011131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238494.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20340011131 its reverse (13111004302), we get a palindrome (33451015433).

The spelling of 20340011131 in words is "twenty billion, three hundred forty million, eleven thousand, one hundred thirty-one".