2105345631 has 8 divisors (see below), whose sum is σ = 2810034304. Its totient is φ = 1402110360.

The previous prime is 2105345629. The next prime is 2105345639. The reversal of 2105345631 is 1365435012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2105345631 - 2¹ = 2105345629 is a prime.

It is a super-2 number, since 2×2105345631² = 8864960451941576322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105345639) 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, 359965 + ... + 365766.

It is an arithmetic number, because the mean of its divisors is an integer number (351254288).

Almost surely, 2^2105345631 is an apocalyptic number.

2105345631 is a deficient number, since it is larger than the sum of its proper divisors (704688673).

2105345631 is an equidigital number, since it uses as much as digits as its factorization.

2105345631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726701.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2105345631 is about 45884.0454951392. The cubic root of 2105345631 is about 1281.6648321914.

The spelling of 2105345631 in words is "two billion, one hundred five million, three hundred forty-five thousand, six hundred thirty-one".