11541531 has 12 divisors (see below), whose sum is σ = 16242792. Its totient is φ = 7288704.

The previous prime is 11541529. The next prime is 11541533. The reversal of 11541531 is 13514511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11541529) and next prime (11541533).

It is not a de Polignac number, because 11541531 - 2¹ = 11541529 is a prime.

It is a super-2 number, since 2×11541531² = 266413875647922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11541498 and 11541507.

It is not an unprimeable number, because it can be changed into a prime (11541533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4246 + ... + 6411.

It is an arithmetic number, because the mean of its divisors is an integer number (1353566).

Almost surely, 2^11541531 is an apocalyptic number.

11541531 is a deficient number, since it is larger than the sum of its proper divisors (4701261).

11541531 is a wasteful number, since it uses less digits than its factorization.

11541531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10698 (or 10679 counting only the distinct ones).

The product of its digits is 300, while the sum is 21.

The square root of 11541531 is about 3397.2828848949. The cubic root of 11541531 is about 225.9892638542.

The spelling of 11541531 in words is "eleven million, five hundred forty-one thousand, five hundred thirty-one".