11233231019 has 4 divisors (see below), whose sum is σ = 11315225544. Its totient is φ = 11151236496.

The previous prime is 11233230989. The next prime is 11233231057. The reversal of 11233231019 is 91013233211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91013233211 = 19 ⋅4790170169.

It is a cyclic number.

It is not a de Polignac number, because 11233231019 - 2⁸ = 11233230763 is a prime.

It is a super-2 number, since 2×11233231019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11233281019) 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, 40997057 + ... + 40997330.

It is an arithmetic number, because the mean of its divisors is an integer number (2828806386).

Almost surely, 2^11233231019 is an apocalyptic number.

11233231019 is a deficient number, since it is larger than the sum of its proper divisors (81994525).

11233231019 is an equidigital number, since it uses as much as digits as its factorization.

11233231019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81994524.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 11233231019 in words is "eleven billion, two hundred thirty-three million, two hundred thirty-one thousand, nineteen".