11203323131 has 32 divisors (see below), whose sum is σ = 15105484800. Its totient is φ = 8024446080.

The previous prime is 11203323121. The next prime is 11203323149. The reversal of 11203323131 is 13132330211.

It is not a de Polignac number, because 11203323131 - 2¹⁴ = 11203306747 is a prime.

It is a super-2 number, since 2×11203323131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11203323101) 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 31 ways as a sum of consecutive naturals, for example, 215825 + ... + 262653.

It is an arithmetic number, because the mean of its divisors is an integer number (472046400).

Almost surely, 2^11203323131 is an apocalyptic number.

11203323131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11203323131 is a deficient number, since it is larger than the sum of its proper divisors (3902161669).

11203323131 is a wasteful number, since it uses less digits than its factorization.

11203323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47099.

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

Adding to 11203323131 its reverse (13132330211), we get a palindrome (24335653342).

The spelling of 11203323131 in words is "eleven billion, two hundred three million, three hundred twenty-three thousand, one hundred thirty-one".