11231535204 has 18 divisors (see below), whose sum is σ = 28390825190. Its totient is φ = 3743845056.

The previous prime is 11231535157. The next prime is 11231535229. The reversal of 11231535204 is 40253513211.

11231535204 is a `hidden beast` number, since 1 + 123 + 1 + 535 + 2 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9574231104 + 1657304100 = 97848^2 + 40710^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×11231535204² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155993509 + ... + 155993580.

Almost surely, 2^11231535204 is an apocalyptic number.

It is an amenable number.

11231535204 is an abundant number, since it is smaller than the sum of its proper divisors (17159289986).

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

11231535204 is a wasteful number, since it uses less digits than its factorization.

11231535204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311987099 (or 311987094 counting only the distinct ones).

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

The spelling of 11231535204 in words is "eleven billion, two hundred thirty-one million, five hundred thirty-five thousand, two hundred four".