11000013231 has 4 divisors (see below), whose sum is σ = 14666684312. Its totient is φ = 7333342152.

The previous prime is 11000013221. The next prime is 11000013239. The reversal of 11000013231 is 13231000011.

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

It is not a de Polignac number, because 11000013231 - 2¹⁵ = 10999980463 is a prime.

It is a super-2 number, since 2×11000013231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000013239) 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, 1833335536 + ... + 1833335541.

It is an arithmetic number, because the mean of its divisors is an integer number (3666671078).

Almost surely, 2^11000013231 is an apocalyptic number.

11000013231 is a deficient number, since it is larger than the sum of its proper divisors (3666671081).

11000013231 is an equidigital number, since it uses as much as digits as its factorization.

11000013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666671080.

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

Adding to 11000013231 its reverse (13231000011), we get a palindrome (24231013242).

The spelling of 11000013231 in words is "eleven billion, thirteen thousand, two hundred thirty-one".