2106515131 has 8 divisors (see below), whose sum is σ = 2485105664. Its totient is φ = 1747339560.

The previous prime is 2106515129. The next prime is 2106515167. The reversal of 2106515131 is 1315156012.

It is a happy number.

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 2106515131 - 2¹ = 2106515129 is a prime.

It is a super-2 number, since 2×2106515131² = 8874811994263894322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2106515096 and 2106515105.

It is not an unprimeable number, because it can be changed into a prime (2106515111) 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, 4853505 + ... + 4853938.

It is an arithmetic number, because the mean of its divisors is an integer number (310638208).

Almost surely, 2^2106515131 is an apocalyptic number.

2106515131 is a deficient number, since it is larger than the sum of its proper divisors (378590533).

2106515131 is an equidigital number, since it uses as much as digits as its factorization.

2106515131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9707481.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 2106515131 is about 45896.7878069915. The cubic root of 2106515131 is about 1281.9021059106.

The spelling of 2106515131 in words is "two billion, one hundred six million, five hundred fifteen thousand, one hundred thirty-one".