2102961 has 16 divisors (see below), whose sum is σ = 3225600. Its totient is φ = 1193808.

The previous prime is 2102941. The next prime is 2102999. The reversal of 2102961 is 1692012.

It is not a de Polignac number, because 2102961 - 2⁶ = 2102897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2102941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4810 + ... + 5228.

It is an arithmetic number, because the mean of its divisors is an integer number (201600).

2^2102961 is an apocalyptic number.

2102961 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2102961 is a deficient number, since it is larger than the sum of its proper divisors (1122639).

2102961 is a wasteful number, since it uses less digits than its factorization.

2102961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 2102961 is about 1450.1589568044. The cubic root of 2102961 is about 128.1180754536.

Adding to 2102961 its reverse (1692012), we get a palindrome (3794973).

The spelling of 2102961 in words is "two million, one hundred two thousand, nine hundred sixty-one".