11233213031 has 4 divisors (see below), whose sum is σ = 11344433064. Its totient is φ = 11121993000.

The previous prime is 11233213009. The next prime is 11233213037. The reversal of 11233213031 is 13031233211.

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

It is a cyclic number.

It is not a de Polignac number, because 11233213031 - 2⁶ = 11233212967 is a prime.

It is a super-2 number, since 2×11233213031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11233212994 and 11233213012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233213037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55609865 + ... + 55610066.

It is an arithmetic number, because the mean of its divisors is an integer number (2836108266).

Almost surely, 2^11233213031 is an apocalyptic number.

11233213031 is a deficient number, since it is larger than the sum of its proper divisors (111220033).

11233213031 is a wasteful number, since it uses less digits than its factorization.

11233213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111220032.

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

Adding to 11233213031 its reverse (13031233211), we get a palindrome (24264446242).

The spelling of 11233213031 in words is "eleven billion, two hundred thirty-three million, two hundred thirteen thousand, thirty-one".