11231031 has 8 divisors (see below), whose sum is σ = 17113984. Its totient is φ = 6417720.

The previous prime is 11231029. The next prime is 11231039. The reversal of 11231031 is 13013211.

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

It is not a de Polignac number, because 11231031 - 2¹ = 11231029 is a prime.

It is a super-2 number, since 2×11231031² = 252272114645922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11230998 and 11231016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231039) 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, 267385 + ... + 267426.

It is an arithmetic number, because the mean of its divisors is an integer number (2139248).

Almost surely, 2^11231031 is an apocalyptic number.

11231031 is a deficient number, since it is larger than the sum of its proper divisors (5882953).

11231031 is an equidigital number, since it uses as much as digits as its factorization.

11231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534821.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 11231031 is about 3351.2730416962. The cubic root of 11231031 is about 223.9442290470.

Adding to 11231031 its reverse (13013211), we get a palindrome (24244242).

The spelling of 11231031 in words is "eleven million, two hundred thirty-one thousand, thirty-one".