2106287331 has 4 divisors (see below), whose sum is σ = 2808383112. Its totient is φ = 1404191552.

The previous prime is 2106287303. The next prime is 2106287377. The reversal of 2106287331 is 1337826012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2106287331 - 2¹⁷ = 2106156259 is a prime.

It is a super-2 number, since 2×2106287331² = 8872892641462207122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2106287292 and 2106287301.

It is not an unprimeable number, because it can be changed into a prime (2106287231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351047886 + ... + 351047891.

It is an arithmetic number, because the mean of its divisors is an integer number (702095778).

Almost surely, 2^2106287331 is an apocalyptic number.

2106287331 is a deficient number, since it is larger than the sum of its proper divisors (702095781).

2106287331 is an equidigital number, since it uses as much as digits as its factorization.

2106287331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702095780.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2106287331 is about 45894.3060847421. The cubic root of 2106287331 is about 1281.8558956520.

The spelling of 2106287331 in words is "two billion, one hundred six million, two hundred eighty-seven thousand, three hundred thirty-one".