11011132531 has 8 divisors (see below), whose sum is σ = 12590267904. Its totient is φ = 9433526280.

The previous prime is 11011132511. The next prime is 11011132591. The reversal of 11011132531 is 13523111011.

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 11011132531 - 2⁵ = 11011132499 is a prime.

It is a super-2 number, since 2×11011132531² (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 = 11011132499 and 11011132508.

It is not an unprimeable number, because it can be changed into a prime (11011132511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366805 + ... + 395686.

It is an arithmetic number, because the mean of its divisors is an integer number (1573783488).

Almost surely, 2^11011132531 is an apocalyptic number.

11011132531 is a deficient number, since it is larger than the sum of its proper divisors (1579135373).

11011132531 is an equidigital number, since it uses as much as digits as its factorization.

11011132531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764561.

The product of its (nonzero) digits is 90, while the sum is 19.

Adding to 11011132531 its reverse (13523111011), we get a palindrome (24534243542).

The spelling of 11011132531 in words is "eleven billion, eleven million, one hundred thirty-two thousand, five hundred thirty-one".