2105055431 has 4 divisors (see below), whose sum is σ = 2144773512. Its totient is φ = 2065337352.

The previous prime is 2105055401. The next prime is 2105055457. The reversal of 2105055431 is 1345505012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2105055431 - 2⁶ = 2105055367 is a prime.

It is a super-2 number, since 2×2105055431² = 8862516735165191522, which 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 2105055431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105055401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19858961 + ... + 19859066.

It is an arithmetic number, because the mean of its divisors is an integer number (536193378).

Almost surely, 2^2105055431 is an apocalyptic number.

2105055431 is a deficient number, since it is larger than the sum of its proper divisors (39718081).

2105055431 is an equidigital number, since it uses as much as digits as its factorization.

2105055431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39718080.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2105055431 is about 45880.8830669158. The cubic root of 2105055431 is about 1281.6059414295.

The spelling of 2105055431 in words is "two billion, one hundred five million, fifty-five thousand, four hundred thirty-one".