2109135523 has 8 divisors (see below), whose sum is σ = 2301879600. Its totient is φ = 1916558880.

The previous prime is 2109135487. The next prime is 2109135541. The reversal of 2109135523 is 3255319012.

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

It is a cyclic number.

It is not a de Polignac number, because 2109135523 - 2¹³ = 2109127331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2109135593) 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, 14748 + ... + 66601.

It is an arithmetic number, because the mean of its divisors is an integer number (287734950).

Almost surely, 2^2109135523 is an apocalyptic number.

2109135523 is a deficient number, since it is larger than the sum of its proper divisors (192744077).

2109135523 is a wasteful number, since it uses less digits than its factorization.

2109135523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83717.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 2109135523 is about 45925.3255078285. The cubic root of 2109135523 is about 1282.4334248481.

The spelling of 2109135523 in words is "two billion, one hundred nine million, one hundred thirty-five thousand, five hundred twenty-three".