11390331 has 4 divisors (see below), whose sum is σ = 15187112. Its totient is φ = 7593552.

The previous prime is 11390321. The next prime is 11390341. The reversal of 11390331 is 13309311.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11390321) and next prime (11390341).

It is not a de Polignac number, because 11390331 - 2¹³ = 11382139 is a prime.

It is a super-3 number, since 3×11390331³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11390298 and 11390307.

It is not an unprimeable number, because it can be changed into a prime (11390321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898386 + ... + 1898391.

It is an arithmetic number, because the mean of its divisors is an integer number (3796778).

Almost surely, 2^11390331 is an apocalyptic number.

11390331 is a deficient number, since it is larger than the sum of its proper divisors (3796781).

11390331 is an equidigital number, since it uses as much as digits as its factorization.

11390331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796780.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 11390331 is about 3374.9564441634. The cubic root of 11390331 is about 224.9980641809.

Adding to 11390331 its reverse (13309311), we get a palindrome (24699642).

The spelling of 11390331 in words is "eleven million, three hundred ninety thousand, three hundred thirty-one".