11489531 has 2 divisors, whose sum is σ = 11489532. Its totient is φ = 11489530.

The previous prime is 11489521. The next prime is 11489537. The reversal of 11489531 is 13598411.

11489531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11489531 - 2¹⁸ = 11227387 is a prime.

It is a super-2 number, since 2×11489531² = 264018645199922, which contains 22 as substring.

It is equal to p₇₅₆₆₄₄ and since 11489531 and 756644 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11489537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5744765 + 5744766.

It is an arithmetic number, because the mean of its divisors is an integer number (5744766).

Almost surely, 2^11489531 is an apocalyptic number.

11489531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11489531 is an equidigital number, since it uses as much as digits as its factorization.

11489531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 11489531 is about 3389.6210702673. The cubic root of 11489531 is about 225.6493570541.

The spelling of 11489531 in words is "eleven million, four hundred eighty-nine thousand, five hundred thirty-one".