11589531 has 8 divisors (see below), whose sum is σ = 15985680. Its totient is φ = 7459872.

The previous prime is 11589527. The next prime is 11589541. The reversal of 11589531 is 13598511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11589531 - 2² = 11589527 is a prime.

It is a super-2 number, since 2×11589531² = 268634457599922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11589492 and 11589501.

It is not an unprimeable number, because it can be changed into a prime (11589521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66520 + ... + 66693.

It is an arithmetic number, because the mean of its divisors is an integer number (1998210).

Almost surely, 2^11589531 is an apocalyptic number.

11589531 is a deficient number, since it is larger than the sum of its proper divisors (4396149).

11589531 is a wasteful number, since it uses less digits than its factorization.

11589531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133245.

The product of its digits is 5400, while the sum is 33.

The square root of 11589531 is about 3404.3400241456. The cubic root of 11589531 is about 226.3021189820.

The spelling of 11589531 in words is "eleven million, five hundred eighty-nine thousand, five hundred thirty-one".