961211 has 4 divisors (see below), whose sum is σ = 967272. Its totient is φ = 955152.

The previous prime is 961201. The next prime is 961241. The reversal of 961211 is 112169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112169 = 223 ⋅503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961211 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (961201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786 + ... + 3111.

It is an arithmetic number, because the mean of its divisors is an integer number (241818).

2⁹⁶¹²¹¹ is an apocalyptic number.

961211 is a deficient number, since it is larger than the sum of its proper divisors (6061).

961211 is a wasteful number, since it uses less digits than its factorization.

961211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060.

The product of its digits is 108, while the sum is 20.

The square root of 961211 is about 980.4136881949. The cubic root of 961211 is about 98.6899458605.

Subtracting from 961211 its sum of digits (20), we obtain a triangular number (961191 = T₁₃₈₆).

The spelling of 961211 in words is "nine hundred sixty-one thousand, two hundred eleven".