11303203231 has 8 divisors (see below), whose sum is σ = 11331550944. Its totient is φ = 11274879840.

The previous prime is 11303203207. The next prime is 11303203279. The reversal of 11303203231 is 13230230311.

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-11303203231 is a prime.

It is a super-2 number, since 2×11303203231² (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 = 11303203199 and 11303203208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11303203031) 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, 1221201 + ... + 1230421.

It is an arithmetic number, because the mean of its divisors is an integer number (1416443868).

Almost surely, 2^11303203231 is an apocalyptic number.

11303203231 is a deficient number, since it is larger than the sum of its proper divisors (28347713).

11303203231 is an equidigital number, since it uses as much as digits as its factorization.

11303203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12161.

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

Adding to 11303203231 its reverse (13230230311), we get a palindrome (24533433542).

The spelling of 11303203231 in words is "eleven billion, three hundred three million, two hundred three thousand, two hundred thirty-one".