109131426 has 24 divisors (see below), whose sum is σ = 242843484. Its totient is φ = 35393760.

The previous prime is 109131419. The next prime is 109131427. The reversal of 109131426 is 624131901.

109131426 is a `hidden beast` number, since 109 + 131 + 426 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 108180801 + 950625 = 10401^2 + 975^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 109131426.

It is not an unprimeable number, because it can be changed into a prime (109131427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81265 + ... + 82596.

Almost surely, 2^109131426 is an apocalyptic number.

109131426 is an abundant number, since it is smaller than the sum of its proper divisors (133712058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109131426 is a wasteful number, since it uses less digits than its factorization.

109131426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163906 (or 163903 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 109131426 is about 10446.5987766354. The cubic root of 109131426 is about 477.8775297079.

The spelling of 109131426 in words is "one hundred nine million, one hundred thirty-one thousand, four hundred twenty-six".