11530404531 has 24 divisors (see below), whose sum is σ = 16901570400. Its totient is φ = 7573378176.

The previous prime is 11530404527. The next prime is 11530404533. The reversal of 11530404531 is 13540403511.

It is a happy number.

It is not a de Polignac number, because 11530404531 - 2² = 11530404527 is a prime.

It is a super-2 number, since 2×11530404531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11530404495 and 11530404504.

It is not an unprimeable number, because it can be changed into a prime (11530404533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 626245 + ... + 644393.

It is an arithmetic number, because the mean of its divisors is an integer number (704232100).

Almost surely, 2^11530404531 is an apocalyptic number.

11530404531 is a deficient number, since it is larger than the sum of its proper divisors (5371165869).

11530404531 is a wasteful number, since it uses less digits than its factorization.

11530404531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19195 (or 19192 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 11530404531 in words is "eleven billion, five hundred thirty million, four hundred four thousand, five hundred thirty-one".