20109114431 has 16 divisors (see below), whose sum is σ = 23895051840. Its totient is φ = 16557515520.

The previous prime is 20109114427. The next prime is 20109114439. The reversal of 20109114431 is 13441190102.

It is a happy number.

It is not a de Polignac number, because 20109114431 - 2² = 20109114427 is a prime.

It is a super-2 number, since 2×20109114431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20109114431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20109114439) 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, 211430 + ... + 291411.

It is an arithmetic number, because the mean of its divisors is an integer number (1493440740).

Almost surely, 2^20109114431 is an apocalyptic number.

20109114431 is a deficient number, since it is larger than the sum of its proper divisors (3785937409).

20109114431 is a wasteful number, since it uses less digits than its factorization.

20109114431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503074.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 20109114431 in words is "twenty billion, one hundred nine million, one hundred fourteen thousand, four hundred thirty-one".