20343113131 has 8 divisors (see below), whose sum is σ = 22733767728. Its totient is φ = 18042672000.

The previous prime is 20343113129. The next prime is 20343113137. The reversal of 20343113131 is 13131134302.

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 20343113131 - 2¹ = 20343113129 is a prime.

It is a super-2 number, since 2×20343113131² (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 (20343113137) 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, 22552890 + ... + 22553791.

It is an arithmetic number, because the mean of its divisors is an integer number (2841720966).

Almost surely, 2^20343113131 is an apocalyptic number.

20343113131 is a deficient number, since it is larger than the sum of its proper divisors (2390654597).

20343113131 is a wasteful number, since it uses less digits than its factorization.

20343113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45106733.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20343113131 its reverse (13131134302), we get a palindrome (33474247433).

The spelling of 20343113131 in words is "twenty billion, three hundred forty-three million, one hundred thirteen thousand, one hundred thirty-one".