11033312231 has 8 divisors (see below), whose sum is σ = 11231666544. Its totient is φ = 10835521920.

The previous prime is 11033312219. The next prime is 11033312261. The reversal of 11033312231 is 13221333011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11033312231 is a prime.

It is a super-2 number, since 2×11033312231² (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 (11033312261) 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, 101426 + ... + 179871.

It is an arithmetic number, because the mean of its divisors is an integer number (1403958318).

Almost surely, 2^11033312231 is an apocalyptic number.

11033312231 is a deficient number, since it is larger than the sum of its proper divisors (198354313).

11033312231 is an equidigital number, since it uses as much as digits as its factorization.

11033312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282001.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11033312231 its reverse (13221333011), we get a palindrome (24254645242).

The spelling of 11033312231 in words is "eleven billion, thirty-three million, three hundred twelve thousand, two hundred thirty-one".