2105226531 has 40 divisors (see below), whose sum is σ = 3177283824. Its totient is φ = 1389104640.

The previous prime is 2105226517. The next prime is 2105226553. The reversal of 2105226531 is 1356225012.

It is a happy number.

2105226531 is a `hidden beast` number, since 2 + 1 + 0 + 5 + 2 + 2 + 653 + 1 = 666.

It is not a de Polignac number, because 2105226531 - 2¹⁵ = 2105193763 is a prime.

It is a super-2 number, since 2×2105226531² = 8863957493652587922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2105226495 and 2105226504.

It is not an unprimeable number, because it can be changed into a prime (2105226511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6246795 + ... + 6247131.

Almost surely, 2^2105226531 is an apocalyptic number.

2105226531 is a deficient number, since it is larger than the sum of its proper divisors (1072057293).

2105226531 is a wasteful number, since it uses less digits than its factorization.

2105226531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2105226531 is about 45882.7476400444. The cubic root of 2105226531 is about 1281.6406636879.

The spelling of 2105226531 in words is "two billion, one hundred five million, two hundred twenty-six thousand, five hundred thirty-one".