11122031231 has 8 divisors (see below), whose sum is σ = 11482402944. Its totient is φ = 10761759360.

The previous prime is 11122031203. The next prime is 11122031281. The reversal of 11122031231 is 13213022111.

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 11122031231 - 2¹⁴ = 11122014847 is a prime.

It is a super-2 number, since 2×11122031231² (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 (11122031201) 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, 249515 + ... + 290691.

It is an arithmetic number, because the mean of its divisors is an integer number (1435300368).

Almost surely, 2^11122031231 is an apocalyptic number.

11122031231 is a deficient number, since it is larger than the sum of its proper divisors (360371713).

11122031231 is an equidigital number, since it uses as much as digits as its factorization.

11122031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49921.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11122031231 its reverse (13213022111), we get a palindrome (24335053342).

The spelling of 11122031231 in words is "eleven billion, one hundred twenty-two million, thirty-one thousand, two hundred thirty-one".