11331961 has 4 divisors (see below), whose sum is σ = 11928400. Its totient is φ = 10735524.

The previous prime is 11331941. The next prime is 11331973. The reversal of 11331961 is 16913311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11331961 - 2¹⁵ = 11299193 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11331941) 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, 298191 + ... + 298228.

It is an arithmetic number, because the mean of its divisors is an integer number (2982100).

Almost surely, 2^11331961 is an apocalyptic number.

It is an amenable number.

11331961 is a deficient number, since it is larger than the sum of its proper divisors (596439).

11331961 is an equidigital number, since it uses as much as digits as its factorization.

11331961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596438.

The product of its digits is 486, while the sum is 25.

The square root of 11331961 is about 3366.2978180785. The cubic root of 11331961 is about 224.6130699615.

The spelling of 11331961 in words is "eleven million, three hundred thirty-one thousand, nine hundred sixty-one".