11890131 has 8 divisors (see below), whose sum is σ = 17294784. Its totient is φ = 7206120.

The previous prime is 11890129. The next prime is 11890141. The reversal of 11890131 is 13109811.

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

It is not a de Polignac number, because 11890131 - 2¹ = 11890129 is a prime.

It is a super-2 number, since 2×11890131² = 282750430394322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11890141) 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, 180121 + ... + 180186.

It is an arithmetic number, because the mean of its divisors is an integer number (2161848).

Almost surely, 2^11890131 is an apocalyptic number.

11890131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11890131 is a deficient number, since it is larger than the sum of its proper divisors (5404653).

11890131 is a wasteful number, since it uses less digits than its factorization.

11890131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360321.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 11890131 is about 3448.2069253454. The cubic root of 11890131 is about 228.2419906839.

Adding to 11890131 its reverse (13109811), we get a palindrome (24999942).

It can be divided in two parts, 11890 and 131, that added together give a palindrome (12021).

The spelling of 11890131 in words is "eleven million, eight hundred ninety thousand, one hundred thirty-one".