11520203131 has 8 divisors (see below), whose sum is σ = 12022295040. Its totient is φ = 11018212392.

The previous prime is 11520203069. The next prime is 11520203141. The reversal of 11520203131 is 13130202511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11520203131 - 2¹⁷ = 11520072059 is a prime.

It is a super-2 number, since 2×11520203131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11520203099 and 11520203108.

It is not an unprimeable number, because it can be changed into a prime (11520203141) 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 7 ways as a sum of consecutive naturals, for example, 292510 + ... + 329548.

It is an arithmetic number, because the mean of its divisors is an integer number (1502786880).

Almost surely, 2^11520203131 is an apocalyptic number.

11520203131 is a deficient number, since it is larger than the sum of its proper divisors (502091909).

11520203131 is a wasteful number, since it uses less digits than its factorization.

11520203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50585.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 11520203131 its reverse (13130202511), we get a palindrome (24650405642).

The spelling of 11520203131 in words is "eleven billion, five hundred twenty million, two hundred three thousand, one hundred thirty-one".