11238203131 has 2 divisors, whose sum is σ = 11238203132. Its totient is φ = 11238203130.

The previous prime is 11238203101. The next prime is 11238203147. The reversal of 11238203131 is 13130283211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11238203131 - 2⁵ = 11238203099 is a prime.

It is a super-2 number, since 2×11238203131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11238203096 and 11238203105.

It is not a weakly prime, because it can be changed into another prime (11238203101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5619101565 + 5619101566.

It is an arithmetic number, because the mean of its divisors is an integer number (5619101566).

Almost surely, 2^11238203131 is an apocalyptic number.

11238203131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11238203131 is an equidigital number, since it uses as much as digits as its factorization.

11238203131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 11238203131 its reverse (13130283211), we get a palindrome (24368486342).

It can be divided in two parts, 11238 and 203131, that added together give a square (214369 = 463²).

The spelling of 11238203131 in words is "eleven billion, two hundred thirty-eight million, two hundred three thousand, one hundred thirty-one".