11158631 has 8 divisors (see below), whose sum is σ = 12203904. Its totient is φ = 10118520.

The previous prime is 11158621. The next prime is 11158633. The reversal of 11158631 is 13685111.

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

It is a cyclic number.

It is not a de Polignac number, because 11158631 - 2¹⁴ = 11142247 is a prime.

It is a super-2 number, since 2×11158631² = 249030091588322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11158631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11158633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4316 + ... + 6398.

It is an arithmetic number, because the mean of its divisors is an integer number (1525488).

Almost surely, 2^11158631 is an apocalyptic number.

11158631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11158631 is a deficient number, since it is larger than the sum of its proper divisors (1045273).

11158631 is a wasteful number, since it uses less digits than its factorization.

11158631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581.

The product of its digits is 720, while the sum is 26.

The square root of 11158631 is about 3340.4537116985. The cubic root of 11158631 is about 223.4619780606.

The spelling of 11158631 in words is "eleven million, one hundred fifty-eight thousand, six hundred thirty-one".