11631261 has 16 divisors (see below), whose sum is σ = 16352640. Its totient is φ = 7339200.

The previous prime is 11631251. The next prime is 11631271. The reversal of 11631261 is 16213611.

It is an interprime number because it is at equal distance from previous prime (11631251) and next prime (11631271).

It is not a de Polignac number, because 11631261 - 2⁵ = 11631229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11631251) 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, 6135 + ... + 7803.

It is an arithmetic number, because the mean of its divisors is an integer number (1022040).

Almost surely, 2^11631261 is an apocalyptic number.

It is an amenable number.

11631261 is a deficient number, since it is larger than the sum of its proper divisors (4721379).

11631261 is a wasteful number, since it uses less digits than its factorization.

11631261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796.

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

The square root of 11631261 is about 3410.4634582414. The cubic root of 11631261 is about 226.5734062225.

Adding to 11631261 its reverse (16213611), we get a palindrome (27844872).

The spelling of 11631261 in words is "eleven million, six hundred thirty-one thousand, two hundred sixty-one".