11117631 has 8 divisors (see below), whose sum is σ = 16941184. Its totient is φ = 6352920.

The previous prime is 11117629. The next prime is 11117633. The reversal of 11117631 is 13671111.

It is an interprime number because it is at equal distance from previous prime (11117629) and next prime (11117633).

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

It is not a de Polignac number, because 11117631 - 2¹ = 11117629 is a prime.

It is a super-2 number, since 2×11117631² = 247203438104322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 529411 = 11117631 / (1 + 1 + 1 + 1 + 7 + 6 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11117598 and 11117607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11117633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264685 + ... + 264726.

It is an arithmetic number, because the mean of its divisors is an integer number (2117648).

Almost surely, 2^11117631 is an apocalyptic number.

11117631 is a deficient number, since it is larger than the sum of its proper divisors (5823553).

11117631 is an equidigital number, since it uses as much as digits as its factorization.

11117631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529421.

The product of its digits is 126, while the sum is 21.

The square root of 11117631 is about 3334.3111732410. The cubic root of 11117631 is about 223.1879544443.

Adding to 11117631 its reverse (13671111), we get a palindrome (24788742).

The spelling of 11117631 in words is "eleven million, one hundred seventeen thousand, six hundred thirty-one".