2101306 has 8 divisors (see below), whose sum is σ = 3175380. Its totient is φ = 1042848.

The previous prime is 2101283. The next prime is 2101313. The reversal of 2101306 is 6031012.

It can be written as a sum of positive squares in 2 ways, for example, as 1890625 + 210681 = 1375^2 + 459^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3561 + ... + 4108.

2^2101306 is an apocalyptic number.

2101306 is a deficient number, since it is larger than the sum of its proper divisors (1074074).

2101306 is a wasteful number, since it uses less digits than its factorization.

2101306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2101306 is about 1449.5882173914. The cubic root of 2101306 is about 128.0844576069.

Adding to 2101306 its reverse (6031012), we get a palindrome (8132318).

The spelling of 2101306 in words is "two million, one hundred one thousand, three hundred six".