11831965 has 16 divisors (see below), whose sum is σ = 15033600. Its totient is φ = 8914752.

The previous prime is 11831957. The next prime is 11831969. The reversal of 11831965 is 56913811.

11831965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11831965 - 2³ = 11831957 is a prime.

It is a super-2 number, since 2×11831965² = 279990791522450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11831965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11831969) 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, 25324 + ... + 25786.

It is an arithmetic number, because the mean of its divisors is an integer number (939600).

Almost surely, 2^11831965 is an apocalyptic number.

It is an amenable number.

11831965 is a deficient number, since it is larger than the sum of its proper divisors (3201635).

11831965 is a wasteful number, since it uses less digits than its factorization.

11831965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756.

The product of its digits is 6480, while the sum is 34.

The square root of 11831965 is about 3439.7623464420. The cubic root of 11831965 is about 227.8691988543.

The spelling of 11831965 in words is "eleven million, eight hundred thirty-one thousand, nine hundred sixty-five".