11531035136 has 40 divisors (see below), whose sum is σ = 23061857280. Its totient is φ = 5759935488.

The previous prime is 11531035123. The next prime is 11531035157. The reversal of 11531035136 is 63153013511.

It is a junction number, because it is equal to n+sod(n) for n = 11531035099 and 11531035108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546185 + ... + 566903.

It is an arithmetic number, because the mean of its divisors is an integer number (576546432).

Almost surely, 2^11531035136 is an apocalyptic number.

11531035136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11531035136 is a deficient number, since it is larger than the sum of its proper divisors (11530822144).

11531035136 is an equidigital number, since it uses as much as digits as its factorization.

11531035136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21824 (or 21808 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 29.

Adding to 11531035136 its reverse (63153013511), we get a palindrome (74684048647).

The spelling of 11531035136 in words is "eleven billion, five hundred thirty-one million, thirty-five thousand, one hundred thirty-six".