11531050038 has 24 divisors (see below), whose sum is σ = 24997439376. Its totient is φ = 3841606800.

The previous prime is 11531050031. The next prime is 11531050039. The reversal of 11531050038 is 83005013511.

11531050038 is a `hidden beast` number, since 1 + 153 + 1 + 0 + 500 + 3 + 8 = 666.

It is a super-2 number, since 2×11531050038² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11531049993 and 11531050020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11531050031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138618 + ... + 205613.

It is an arithmetic number, because the mean of its divisors is an integer number (1041559974).

Almost surely, 2^11531050038 is an apocalyptic number.

11531050038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11531050038 is an abundant number, since it is smaller than the sum of its proper divisors (13466389338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11531050038 is a wasteful number, since it uses less digits than its factorization.

11531050038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346100 (or 346097 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 11531050038 its reverse (83005013511), we get a palindrome (94536063549).

The spelling of 11531050038 in words is "eleven billion, five hundred thirty-one million, fifty thousand, thirty-eight".