11323203031 has 4 divisors (see below), whose sum is σ = 12940803472. Its totient is φ = 9705602592.

The previous prime is 11323202987. The next prime is 11323203041. The reversal of 11323203031 is 13030232311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13030232311 = 11411 ⋅1141901.

It is not a de Polignac number, because 11323203031 - 2¹⁹ = 11322678743 is a prime.

It is a super-2 number, since 2×11323203031² (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 (11323203041) 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, 808800210 + ... + 808800223.

It is an arithmetic number, because the mean of its divisors is an integer number (3235200868).

Almost surely, 2^11323203031 is an apocalyptic number.

11323203031 is a deficient number, since it is larger than the sum of its proper divisors (1617600441).

11323203031 is an equidigital number, since it uses as much as digits as its factorization.

11323203031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617600440.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 11323203031 its reverse (13030232311), we get a palindrome (24353435342).

The spelling of 11323203031 in words is "eleven billion, three hundred twenty-three million, two hundred three thousand, thirty-one".